Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f9c3b09a4ac8772…

MALICIOUS

PDF

37.8 KB Created: 2020-08-21 23:57:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a0e376a0c1320a484391255ebb02ac3f SHA-1: a475ae319d4cad896927eda6de9e64642986d70f SHA-256: 6f9c3b09a4ac8772f33b22d43ee2b9febff8a3c8ec5b849cedf2cfe8fad9270a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to Shopify domains hosting other PDFs, but at least one critical heuristic indicates a malicious redirector. The document body, though heavily obfuscated, contains a reference to 'personification worksheet 2nd grade' and a URL that aligns with the malicious redirector heuristic. This suggests a phishing or malware distribution attempt using a lure document.

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=personification+worksheet+2nd+grade In PDF document text
    • http://nizososiv.acmedogrun.com/uploads/1/3/0/8/130814070/sobabonikojabewuw.pdfIn PDF document text
    • http://files.tactileearth.com/uploads/1/3/1/4/131482991/247987.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/1/0430/3536/1442/files/kopifujomuwejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3037/1738/files/javoxojivowopip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4569/0266/files/gipowijid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/roxoramowapekigaful.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13534048661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/viteg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5024/6054/files/88809808395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2210/4222/files/90513276637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5738/8440/files/worivaxupilekuj.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_off0000558f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x558F 5540 bytes
SHA-256: 615e5ef0db4ea216b4c334a5d2f95cb5723b075baca6a282eda8d769fbf7212f
font_01_sfnt_off0000686d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x686D 9992 bytes
SHA-256: 85198e0bf1f572bcefc1f266a8da0283c11ae33bfff76775a29608c6c61e4c7f

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