Malicious PDF — malware analysis report

Static analysis result for SHA-256 092a4a4bfc2ddb20…

MALICIOUS

PDF

44.0 KB Created: 2020-07-28 19:48:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b22e20466bfaed5b4b9c0162add9d147 SHA-1: e83b87bb959e21dc4323853d583a71c4a5d7094d SHA-256: 092a4a4bfc2ddb2037d385389d77d7fec2c1c6c10a868f4489b9bd1710f2c985
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a URL associated with SEO link farming and phishing lures. The document body, though heavily obfuscated, suggests a theme of 'flexible working request' to entice users to click the malicious link. The ML classifier strongly indicates 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.ru/pify?keyword=flexible+working+request+appeal+letter+template In PDF document text
    • http://files.agefriendlybethel.org/uploads/1/3/2/6/132683005/7703249.pdfIn PDF document text
    • http://files.stdastoriayouth.com/uploads/1/3/2/6/132696335/wiporoxiwizisoli.pdfIn PDF document text
    • http://files.oldsskatingclub.ca/uploads/1/3/1/4/131437983/5f2af85.pdfIn PDF document text
    • http://files.drbriancasteels.com/uploads/1/3/1/8/131872178/3259337.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/1/0428/9835/8432/files/86399573169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/fajufulonesafebikoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3653/9045/files/dexatuxag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4827/9970/files/64085671889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7600/9622/files/zuvokijag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1537/9866/files/daxenejojijofodakux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0580/3687/files/63605293498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/posapijafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6248/5407/files/74963843598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/82810051745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8523/3302/files/dolalekoz.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_off00006e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E50 5464 bytes
SHA-256: b5884b015a0797bb43ed30542a6146497c426d52afd6c5c3a9fd9bd0c15fb24c
font_01_sfnt_off000080e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E5 9856 bytes
SHA-256: 5e1040014f751ae34f7fd7967cbb7e1c0efbe0c5a8cc949d2ebbfd89cac5898a

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