Malicious PDF — malware analysis report

Static analysis result for SHA-256 937192d77869dcda…

MALICIOUS

PDF

43.1 KB Created: 2020-08-18 13:23:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d93f011173980d0ddd2f7349afd3de8e SHA-1: 6ef03dcf48e2950b314c2a0dad6d350707363992 SHA-256: 937192d77869dcda2396ec517e7d12441d35d09c0a83527426d163ca57739017
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Android app maker for windows 7' and the malicious URL. This suggests a social engineering lure to drive traffic to a malicious site. No scripts were extracted, limiting the analysis of direct payload execution.

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=android+app+maker+for+windows+7 In PDF document text
    • http://files.leluxhomescents.com/uploads/1/3/2/6/132682655/rabojipix-zawixisaxugezi.pdfIn PDF document text
    • http://gajegip.mxrkz.com/uploads/1/3/1/8/131871395/sonunubogon_dupofi.pdfIn PDF document text
    • http://rovij.inhomesalestrainer.com/uploads/1/3/1/8/131856643/596910ecf.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/1/0437/3394/2423/files/91965387152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/rofezomelibufemulukesudex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3883/3816/files/85298014234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1301/2636/files/15894580334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0492/7905/files/28147457529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2344/0792/files/vefukomukipimib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/14362555672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9173/9295/files/dajag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2243/3953/files/91769368884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2710/1853/files/82183680909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5168/7848/files/29971578047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4912/3993/files/4119739528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0825/8211/files/gozorilajozupuwomijaxid.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 3

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_off000069df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69DF 5380 bytes
SHA-256: b49bbae3b99349cf0db62febc184ee0d044b800c85f1cbb9b728456e2b25cce8
font_01_sfnt_off00007c32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C32 10352 bytes
SHA-256: d708dd99187d46e373e5c009514d0175edc9c4be1fb8a3c6c6e952963fe2d4c6

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