Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d1192f4e51d8e33…

MALICIOUS

PDF

41.9 KB Created: 2020-08-09 07:36:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ea21e83b2bf7212c6aa077f89f2af5c SHA-1: 13dfe1e9f94628f6c722cc37e73931a2fa5472ca SHA-256: 4d1192f4e51d8e332030d324589c5b0032a2373b22f80393ede1b311b6f7c8ae
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body text, though partially corrupted, includes the phrase 'assembler deux documents pdf en un seul' and the malicious URL, suggesting a lure to disguise the malicious intent. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=assembler+deux+documents+pdf+en+un+seul In PDF document text
    • http://files.polizzigenealogy.com/uploads/1/3/1/1/131164052/gujakut-tipodunulub-mugefigurevitiz-sativegiv.pdfIn PDF document text
    • http://files.barrvillemc.org/uploads/1/3/0/7/130776118/423244.pdfIn PDF document text
    • http://files.bagnallproperties.com/uploads/1/3/0/8/130815058/698b90.pdfIn PDF document text
    • http://files.allsystemsgoltd.com/uploads/1/3/1/4/131454151/d465541d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5062/3385/files/rogixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/xomorofavibuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0641/9367/files/amore_e_psiche.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/wufiforipebowugidogodixuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5552/0667/files/tifubalotalotire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4917/2643/files/pdf_adam_smith_wealth_of_nations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/html_turn_off_autocomplete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8315/3056/files/60833166970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/tratamiento_de_aplasia_medular.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/bobowuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/ragisuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9446/4929/files/botania_black_lotus.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_off000065e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E3 5288 bytes
SHA-256: c109d630747bbac996f663610a9190195ec922296813b016b0fd6accf1c58d39
font_01_sfnt_off000077ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77CA 11028 bytes
SHA-256: 777dcf6fd37b7f0206a369d82d427fcb96ab467d1e11676f3d8d2aa10acf64e2

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