Malicious PDF — malware analysis report

Static analysis result for SHA-256 2795c1a1445d1d3c…

MALICIOUS

PDF

41.9 KB Created: 2020-08-08 14:49:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02ec02bb0481bd5a63a06e47960b16d8 SHA-1: bc293805ae1d02bff98cbb7b82079effe3a8964d SHA-256: 2795c1a1445d1d3c0ee8e9241e06163ccee3970a30f0a5798d6607bf3158e838
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a 'certificate of service template' lure, and the primary malicious URL is associated with this theme. The presence of a link farm further indicates an attempt to manipulate search engine results or distribute malicious content broadly. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or redirection attack.

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=certificate+of+service+template+pdf In PDF document text
    • http://files.ephratamartialarts.com/uploads/1/3/2/8/132815015/5ed445b8c.pdfIn PDF document text
    • http://files.whitneyswings.com/uploads/1/3/0/7/130776518/91011696b26.pdfIn PDF document text
    • http://files.riversideblooms.com/uploads/1/3/1/6/131637014/bf3ce8.pdfIn PDF document text
    • http://files.rooseveltelementarypto.org/uploads/1/3/0/7/130776131/9757311.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/1/0436/5287/4390/files/business_communication_english_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2531/6514/files/bafupavuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5094/3142/files/gezeletibizanoburoxipew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1220/2389/files/money_pink_floyd_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/8942/3525/files/amenorrhea_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9878/3382/files/88041382052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/94828422970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6410/6909/files/88078320765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4300/4322/files/xuwuxijaduf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0913/9110/files/xuboranoretoxonozof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9121/3988/files/jizaxapezivotemodaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4018/7303/files/98255103374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8565/1358/files/vosozupozog.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_off00005d43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D43 5264 bytes
SHA-256: 7a73a27d9af9dfa7b9d0828c948e7b719b88b5d7684e7ce39db54fe549f751d7
font_01_sfnt_off00006f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F18 13612 bytes
SHA-256: ec56936c581828a62d8a4edd80ff045c1f5fe3da2cd4f1774ee60ca04260ab9d

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