Malicious PDF — malware analysis report

Static analysis result for SHA-256 70a16abf85e64c1f…

MALICIOUS

PDF

225.4 KB Created: 2022-04-30 03:57:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-15
MD5: 901e1bf02d12ad89fb8e9b1af13f0cfe SHA-1: 104f3c3845d5c9a695248dccfb3fe92989861a11 SHA-256: 70a16abf85e64c1fe5d6441c772405b89d44dd3380dd1bc105390bdf068955df
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple heuristics indicating malicious intent, including external URI redirection and parser evasion techniques. The presence of an image lure linking to an SEO redirector suggests a phishing attempt. ClamAV also detected the file as a phishing trojan. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8281

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://fecuq.co.za/XSRYdR1H?utm_term=lansweeper+report+software+name PDF link annotation
    • https://sofovelo.weebly.com/uploads/1/3/1/3/131379060/ruwefagex-deninezulimifi.pdfIn PDF document text
    • https://bajukurufutot.weebly.com/uploads/1/3/4/5/134525313/jafazigaruw.pdfIn PDF document text
    • http://studioagm.it/userfiles/files/periwopafezizoganan.pdfIn PDF document text
    • https://ritobowelo.weebly.com/uploads/1/4/1/3/141339837/masadaridisipo_zepukojepe_zumawizowugumop_vewutoluvijak.pdfIn PDF document text
    • http://dyglas.com/userData/board/file/47497541747.pdfIn PDF document text
    • https://dipitamadupod.weebly.com/uploads/1/3/4/8/134882687/1908766.pdfIn PDF document text
    • http://bcma.com.bd/backend/web/kcfinder/upload/files/ripatilinogej.pdfIn PDF document text
    • https://bagolisenavela.weebly.com/uploads/1/3/4/4/134496394/tujugidijodemil.pdfIn PDF document text
    • https://tizupokewa.weebly.com/uploads/1/3/4/0/134013062/fc16a1e.pdfIn PDF document text
    • https://cira.thinkabit.net/downloads/files/nodufezuxanuxedezopax.pdfIn PDF document text
    • https://listapp.in/ci/userfiles/files/puzapurumasuxaxiw.pdfIn PDF document text
    • https://roderisagewap.weebly.com/uploads/1/3/4/5/134507489/terobusowegezo_komudodolijunal.pdfIn PDF document text
    • https://powigakiluxoja.weebly.com/uploads/1/3/4/5/134521341/8392a7ba00bbf.pdfIn PDF document text
    • https://lufeziwupidel.weebly.com/uploads/1/3/5/3/135345985/tezodapenoli-jeworozoziniw-sazur.pdfIn PDF document text
    • https://lammensfilip.be/uploads/files/wuriwepud.pdfIn PDF document text
    • http://sehitebebirgulaktasasm.com/depo/files/23462951765.pdfIn PDF document text
    • http://0-50.ru/userfiles/file/lalowarewufoxonazuwipoj.pdfIn PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/binusivu.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/ooelshsuii118oda8q2ucq69k1/69102836893.pdfIn PDF document text
    • https://www.starvisaservices.co.uk/application/elements/plugins/kcfinder/upload/files/5706944795.pdfIn PDF document text
    • https://terojejiw.weebly.com/uploads/1/3/5/3/135348369/dad223c.pdfIn PDF document text
    • http://omegabg.net/media/ck/files/vonexix.pdfIn PDF document text
    • https://puwulafu.weebly.com/uploads/1/3/5/3/135329465/verogazutumo_nebejel.pdfIn PDF document text
    • https://keluargamimpi.com/contents/files/88582403510.pdfIn PDF document text
    • https://kegazesawatodo.weebly.com/uploads/1/3/4/3/134378031/3c1cac5a.pdfIn PDF document text
    • https://minipajaxote.weebly.com/uploads/1/4/1/2/141257733/2646047.pdfIn PDF document text
    • https://bafiredevidif.weebly.com/uploads/1/3/1/3/131384403/0e2c29.pdfIn PDF document text
    • http://bancasemecanino.com/userfiles/files/gowirupazezudewaro.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off000314ba.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000314ba.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000314ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x314BA 19080 bytes
SHA-256: 5f9a92b9d4fd14df98956ddb7cab9d7d3dbfb4e8b5fd22d34da30b08434108b6
font_01_sfnt_off00034693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34693 10424 bytes
SHA-256: 7dfbccc2a643a1a26efedcc2936182529b337455c0b8040f4ee1d36ff3d0cf0d
font_02_sfnt_off00035e47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35E47 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1