Malicious PDF — malware analysis report

Static analysis result for SHA-256 76a3e2c3adc7d7b8…

MALICIOUS

PDF

45.6 KB Created: 2020-08-22 00:17:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74ece1b20761ef2b118e43f018240552 SHA-1: 5d06ec4680f84db313bce75a7583ae6bfdd5d5ed SHA-256: 76a3e2c3adc7d7b8e375589ed954d7cff074312d4d1502f04c5ddc0bdd184884
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector. The document body text and heuristics indicate a lure related to 'Google drive apkmirror', likely a phishing attempt to redirect users to malicious sites. The presence of numerous PDF links suggests a link farm for SEO manipulation to distribute the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://ttraff.ru/pify?keyword=google+drive+apkmirror In PDF document text
    • http://files.montanalanguageteachers.org/uploads/1/3/1/3/131379217/81740e7af12a7b5.pdfIn PDF document text
    • http://files.heartblendfm.com/uploads/1/3/1/4/131406082/golutatog-limijipegibo-luwewariv.pdfIn PDF document text
    • http://wikasakax.sophisticatedladysalon.com/uploads/1/3/0/8/130874207/7475416.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8921/6163/files/fakonara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3102/0198/files/13030023151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2771/0630/files/19033470518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/83473521471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6057/5894/files/93226812149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/60142273315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9403/5880/files/carpal_tunnel_stretching_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/nulexaziwosujavogugewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8903/files/lisemalupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/casio_protrek_prg_270b_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/2878/7878/files/brooklyn_nine_nine_season_6_complete.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 5

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6912 4856 bytes
SHA-256: ee4e4b99812bf3304fb3a1457bc8450f343f7accf2b0c2da1844ee47fe9333a1
font_01_sfnt_off000079a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A0 9888 bytes
SHA-256: 031c17213dbd9d251b0f9aed7145da0c16cb14b169fe2c78162aebb34dc53b74
font_02_sfnt_off00009b90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B90 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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