Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9f140cc53cc4ec4…

MALICIOUS

PDF

48.2 KB Created: 2020-08-13 22:22:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 16d8a4658d0b610c4a533b023b1c2940 SHA-1: b37ab2c13c4722d92e4db7b6452e142e54b2b514 SHA-256: d9f140cc53cc4ec4573dad533daac2a77644bf702d4495ce93fb5b528e79ff40
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector, suggesting the document's purpose is to drive traffic to malicious infrastructure.

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=starting+a+formal+letter+in+french In PDF document text
    • http://lowikat.annarbormothertree.com/uploads/1/3/0/7/130739704/votipunidasogi_nakima.pdfIn PDF document text
    • http://files.cruzing4photos.com/uploads/1/3/0/8/130874317/2675290.pdfIn PDF document text
    • http://files.wildhuntmasks.com/uploads/1/3/0/7/130739043/25607613bfd57d.pdfIn PDF document text
    • http://files.creativecounselingsrq.org/uploads/1/3/2/7/132710787/5366484.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/1/0433/0687/7080/files/tugogesobiwem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0067/6003/files/loxufalafefovagutejofusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51686393220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1479/9012/files/84416926811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26965864763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1395/6007/files/sdlc_waterfall_methodology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9294/9658/files/koxofamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6628/5480/files/85428124074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8454/6209/files/womutinuzuvaliko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/halimbawa_ng_barayti_ng_wika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7899/1518/files/rixevorafikasuvisos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/11114424635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7663/9127/files/nosake.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_off00007ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF8 5220 bytes
SHA-256: 1a55c9fbd045b8ca551836771f23119977ba82ebaba6b25357bed304a0c902fb
font_01_sfnt_off00009089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9089 10420 bytes
SHA-256: 65f442e542c6793452a62c38ba04adaa12b5bc6d750fce4c55d26982c0b65428

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