Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc70a61ff9c1b896…

MALICIOUS

PDF

69.3 KB Created: 2021-09-26 05:11:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 6954dffedd4088debe800d619efe56fd SHA-1: f62be1b5f21602aa8135c8e5553b264356ae8864 SHA-256: fc70a61ff9c1b8962445eb9352d0e07951fea200f1db7c11f7cf02d4c7768d55
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of QR code lures further supports a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://philabc.ru/uplcv?utm_term=best+android+weather+app+after+dark+sky PDF link annotation
    • http://americansemitruckparts.com/d/files/44211165843.pdfIn PDF document text
    • http://chongros.com/userData/board/file/40807506834.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/aek9dufr4arsocq0tn5sf81ta5/4733093123.pdfIn PDF document text
    • http://ngoinvest.com/uploads/ckfinder/files/50817219262.pdfIn PDF document text
    • http://dogomanhnghia.com/uploads/files/2548587045.pdfIn PDF document text
    • https://expobar.vn/app/webroot/files/images/pages/files/70724651930.pdfIn PDF document text
    • https://korankertas.com/contents/files/31209127461.pdfIn PDF document text
    • http://pneusmarene.it/images/file/fujivu.pdfIn PDF document text
    • https://xn--72ca1bzcdf9cg5df4n5a8cei.com/userfiles/files/siwajibojoxip.pdfIn PDF document text
    • http://darangyi.com/userData/board/file/gexikedabixipijuwovugeva.pdfIn PDF document text
    • http://ballmillfactory.com/d/files/86807461257.pdfIn PDF document text
    • https://atlastoursntravels.com/userfiles/file/julomane.pdfIn PDF document text
    • https://unique-u.biz/images/uploads/file/37233764110.pdfIn PDF document text
    • https://dongphuchuytai.com/upload/files/mejelomonademibivavasa.pdfIn PDF document text
    • https://s-oil.hoakhanh.vn/uploads/image/files/gozosironetemibuxiniv.pdfIn PDF document text
    • https://siltri.com/fck_upload/file/voradisivexizinov.pdfIn PDF document text
    • https://nmg.lv/img/uploads/files/vuvawolokukenufufusez.pdfIn PDF document text
    • http://abpjse.news-read.com/upload/files/xujiv.pdfIn PDF document text
    • https://lingchuanfloor.com/app/webroot/userfiles/files/gavikewoxafumav.pdfIn PDF document text
    • https://pfollowers.com/ci/userfiles/files/ruvugutanawa.pdfIn PDF document text
    • https://armature.ir/cache/fck_files/file/96661038929.pdfIn PDF document text
    • http://vertex-decor.com/userfiles/file/22386279505.pdfIn PDF document text
    • http://resurrection-life.net/userfiles/files/96751375151.pdfIn PDF document text
    • http://kayapalinakliyat.com/file/10830381193.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAECC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c6e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E3 10896 bytes
SHA-256: 67c9186022909dae89968685c240025b5b96fe4e25cccf744282ea628305144e
font_02_sfnt_off0000e023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE023 15788 bytes
SHA-256: 1c3324f127f7bb4a7563523d27af31f7fac252a0a4f7bce378d77999ab2de347

Open this report in the interactive analyzer, or submit your own file for analysis.