Malicious PDF — malware analysis report

Static analysis result for SHA-256 8043d907565d2be6…

MALICIOUS

PDF

46.6 KB Created: 2020-07-28 20:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ec98be91d162769f4b14b9e3ef4dcd1 SHA-1: 600f44ee9d2fa7152e560eed7d7b3d287e0b758d SHA-256: 8043d907565d2be6b3542b0513b3e1ba1cf5c81c1d05b9b1c091bdd13d9d4a6a
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains keywords related to 'Vidmate app android 2014', suggesting a lure. The presence of numerous external PDF links, many pointing to Shopify domains, indicates a link farm strategy, likely to obscure the ultimate malicious destination.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.com/pify?keyword=vidmate+app++android+2014 In PDF document text
    • http://files.dorabramden.com/uploads/1/3/1/3/131382141/3729828.pdfIn PDF document text
    • http://files.facemasksforbusinesses.com/uploads/1/3/1/4/131437147/beseverutetobawivaxi.pdfIn PDF document text
    • http://files.paulelwoodkelly.com/uploads/1/3/1/8/131856186/watunagaxox.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/1/0429/7441/2949/files/folijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/40633324498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0134/8255/files/gogesumatinak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zofes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6993/9612/files/36901110814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5945/3860/files/25699927377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9167/3763/files/labowepop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2610/3971/files/13017759911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25696514874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3016/7202/files/perab.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0E 2952 bytes
SHA-256: e211f2d6e0d1bf1fd17bd5150bc2724fb7c0f1d37b1c69b855d9dcad8de34ab0
font_01_sfnt_off0000799c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x799C 5060 bytes
SHA-256: d118e85353321f10228031826fcd9f7d4024ca64ae24532c987816f82bbe6790
font_02_sfnt_off00008ab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB5 10348 bytes
SHA-256: 78e76dbb9df5b701a894e883c5c402064035fe726696a3ad83422458020812a0

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