Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb8bc39d9b89952…

MALICIOUS

PDF

42.8 KB Created: 2020-07-29 17:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b26e3dddf3f03f48581173f9eec0037 SHA-1: aea66ae2e91c7475377b6e05ea61ff51c28d613a SHA-256: 2fb8bc39d9b899526abeeba62cc38283c286a6ca919db3008e5e9ab552723ca9
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'becoming nigerian' and 'pdf download', suggesting a lure. The presence of a PDF link farm further indicates an attempt to drive traffic to external sites, likely for malicious purposes.

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.com/pify?keyword=becoming+nigerian+elnathan+john+pdf+download In PDF document text
    • http://files.savefmcp.org/uploads/1/3/0/9/130969356/5713422.pdfIn PDF document text
    • http://files.supernaturaltraveler.com/uploads/1/3/2/7/132712011/jutib_geriv_jixobokole_titajigesibef.pdfIn PDF document text
    • http://files.extraordinaryed.com/uploads/1/3/1/3/131379946/vowojiziwefajij.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/1/0429/3096/2588/files/diraxipivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9177/8965/files/monosuxizuninejupatapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0505/8976/files/kawobigok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/dizewajexosafunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6983/2342/files/muvemalovozesivulejalego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/peganari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1021/9422/files/67572915065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1351/2100/files/95232807041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71860998709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5982/2243/files/23286212864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4722/3458/files/13973750782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5569/3470/files/ximojizekigizimudodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13170590630.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_off000066db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66DB 5396 bytes
SHA-256: 95071469f3e4fbec030b7caba5df9034c6f23f19d85ed130a2dcdbb64995572e
font_01_sfnt_off0000790e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x790E 10796 bytes
SHA-256: 8dbe7efe541434108e18129f507c32cf584b294448b35abdfc08cc67b4cd8bea

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