Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2e2688ed822dab3…

MALICIOUS

PDF

42.7 KB Created: 2020-08-07 12:56:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 369acf5867abb8fcba32a521d5ffaf79 SHA-1: 0c89d0a0767eec71d5bc57c00f522c0d55ca2152 SHA-256: f2e2688ed822dab3c00a5de0ff6aa97797279ae1721183752ee0f5a4116d29a9
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by an ML classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector, and another noted a large link farm. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking PDF filename, suggesting a lure to a malicious site.

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=beginner+elementary+test+pdf In PDF document text
    • http://files.myuntoldpleasures.com/uploads/1/3/1/3/131398091/050874883345d.pdfIn PDF document text
    • http://files.ammoniteyarns.co.uk/uploads/1/3/0/7/130775658/vugegubupivig.pdfIn PDF document text
    • http://zajin.vocalbreeze.org/uploads/1/3/0/7/130776031/pujuda.pdfIn PDF document text
    • http://files.hilltaxis.co.uk/uploads/1/3/2/8/132814544/c9f648.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/1/0430/3015/1330/files/pirubazitajonedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/2777/9999/files/n_acetilcistena_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9785/0017/files/dibixujusogokodiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3077/2892/files/vimof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7556/7770/files/muwixasulusarasiwabuviv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/harbor_breeze_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8233/3851/files/80230308588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0471/5427/files/dolifisokesitow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1839/4523/files/artificial_intelligence_and_machine_learning_fundamentals.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_off000066d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D9 5512 bytes
SHA-256: dc21975ddcd82b2854ab7927c6c54f5b056459f0b888558a730809cde2e389ef
font_01_sfnt_off0000798d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798D 10644 bytes
SHA-256: 3dced520909dab4a4785515d66f41c488280c33a5a1cff1046150c4870a240e9

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