Malicious PDF — malware analysis report

Static analysis result for SHA-256 3af6a7e10ba9f938…

MALICIOUS

PDF

43.5 KB Created: 2020-07-30 23:30:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5cc4855f3b1aeb050eab887cdd505cbd SHA-1: 2561651ee9340ddc346271822c8807a9565971fe SHA-256: 3af6a7e10ba9f938b688351f7177e6fbd0886aa6b7fc8c0180acb610ff554746
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains heuristics indicating it is a malicious redirector and hosts a link farm. The embedded URL points to a redirector service, which in turn likely leads to a malicious destination. The document body, though heavily obfuscated, contains text related to a 'business plan project', suggesting a social engineering lure. The primary malicious IOC is the redirector URL.

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=business+plan+project+for+mba+students+pdf In PDF document text
    • http://files.champaignwrestling.com/uploads/1/3/1/4/131437241/kizir_saxixesuneziz.pdfIn PDF document text
    • http://files.thecheekyparlor.com/uploads/1/3/1/4/131406036/vodororo-roguriwefanafe-besadubudijaz-logebutuzir.pdfIn PDF document text
    • http://files.allnationsdm.org/uploads/1/3/1/6/131637853/rilupafosipo-zeguf-feziwowanowaza.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/1/0428/9455/7347/files/45614045911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/84252064324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5791/3754/files/lenekuputopakopugitemeref.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/xetazimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5308/6885/files/86042057645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0265/0014/files/kuvelixiwevoxigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3363/9584/files/25694737854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/44759747141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/59217073019.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 4

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_off00006c6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6C 5448 bytes
SHA-256: 2e7fd748baa816d2d6533df60f894a6238708972dd07d76bb8b48834012d842b
font_01_sfnt_off00007ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECF 10000 bytes
SHA-256: 9ef9eee8cda2c6b5579effe6494655b5762b55e85831e6ac19d03a2efd376e2a

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