Malicious PDF — malware analysis report

Static analysis result for SHA-256 81422ae34265bdc2…

MALICIOUS

PDF

42.4 KB Created: 2020-08-02 22:53:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02704bbd97ebd5c5079dc210d823ff17 SHA-1: 2d5954a3e5ae256f2c5916f3323bf478b9bedf85 SHA-256: 81422ae34265bdc2f0f98f31b931cf36e8c06c6de1eea996b79aa010c17d6824
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, many of which point to a redirector service that ultimately leads to malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'Alphabetize google docs' and a URL that is also present in the heuristics, suggesting a phishing lure. The ML classifier 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=alphabetize+google+docs In PDF document text
    • http://files.movingthroughmusic.com/uploads/1/3/1/3/131380627/935e8c611f30d2e.pdfIn PDF document text
    • http://files.freshexpressionsllc.com/uploads/1/3/1/6/131606366/dbd823c445.pdfIn PDF document text
    • http://files.mfsasr.com/uploads/1/3/0/9/130969494/nuluremudozoku.pdfIn PDF document text
    • http://files.silveressencefloatingspa.com/uploads/1/3/1/6/131637178/bedazojirax.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/1/0428/2191/0694/files/roxodewoxubegajom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3256/7195/files/82329732562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/22819824864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5930/4858/files/duviwufadapamuxopixag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/3349708203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/40631508998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5023/files/42164975021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9435/1778/files/35298877949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/89822689524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6913/6280/files/78546889565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/49238712587.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000688d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x688D 5420 bytes
SHA-256: 52b3b82087d300009c0e0145dce265cad3bd1e96a144eedde3583d24c8e75bd8
font_01_sfnt_off00007af8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF8 10116 bytes
SHA-256: 070a08cac623856d36f553247f97545d7110688b3bae118b9baeb2e7a33bbb93

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