Malicious PDF — malware analysis report

Static analysis result for SHA-256 80868a7ded7df1fa…

MALICIOUS

PDF

74.4 KB Created: 2021-02-19 03:54:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 4585cdd70641049e85ea05569ab281e4 SHA-1: afb873c4f97e4112b832315ef122ad51f059bab6 SHA-256: 80868a7ded7df1faefa911a4f495259216f8d33219383926834905406f503173
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as a phishing trojan by ClamAV and an ML classifier. It contains an external URI and an SEO redirector link pointing to 'https://maypoin.ru/wix?keyword=4th+grade+social+studies+california+textbook+pdf', suggesting a phishing or scam attempt disguised as educational content. No scripts were extracted, but the overall structure and detection indicate a malicious intent to lure users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://maypoin.ru/wix?keyword=4th+grade+social+studies+california+textbook+pdf PDF link annotation
    • http://fafaviga.iblogger.org/butchery_business_plan_kenya.pdfIn PDF document text
    • http://pressit.fun/694464390315uwjl.pdfIn PDF document text
    • http://maxawasoreveta.iblogger.org/48263291445.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sapakebozo.rf.gd/1875261609.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/83068011960.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/aashto_t180_free.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/abdullah_pakistani_full_movie_free.pdfIn PDF document text
    • http://jipegutakaxe.rf.gd/auto_format_python_notepad.pdfIn PDF document text
    • http://zebofazedixa.rf.gd/nelakirifagepariporod.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/razutilarosadine.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/figexadutikixivofud.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/57366458171.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/interior_and_exterior_angles_worksheet_maths_genie.pdfIn PDF document text
    • http://zifezerolivuba.epizy.com/tamekefelofiwabe.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F7 5680 bytes
SHA-256: 476aaa97878acee1293c507a5865dbb0337c8b27bf61233c97c843d67d1fdde7
font_01_sfnt_off0000f956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF956 10236 bytes
SHA-256: 7c5f3d4953e3fae5285937bc121acccb00b654c9bab3243960c99578d07c08b9

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