Malicious PDF — malware analysis report

Static analysis result for SHA-256 720ab49a8cfc9cff…

MALICIOUS

PDF

36.5 KB Created: 2020-08-24 15:56:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a41737a1b0438210d5a2b34f4a13cc72 SHA-1: ffa2a5f3cd1381d16e9a651f414ec7e5cea0f775 SHA-256: 720ab49a8cfc9cff687446dcd3e913d6d1947e10020035839ecddfcb68e77219
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one to a known malicious redirector at `https://ttraff.com/pify?keyword=countertop+laminate+sheet+sizes`. This suggests a phishing or scam attempt, likely using the 'countertop laminate sheet sizes' lure to entice clicks. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent.

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=countertop+laminate+sheet+sizes In PDF document text
    • http://files.terraobscura.net/uploads/1/3/2/8/132814958/2992259.pdfIn PDF document text
    • http://jisig.breathworkswellington.co.nz/uploads/1/3/1/4/131407552/nawatukibu_xolexesesesuxo.pdfIn PDF document text
    • http://rudozabol.theyogafixbook.com/uploads/1/3/1/4/131437243/6541302.pdfIn PDF document text
    • http://files.dao-flow.com/uploads/1/3/1/0/131070938/tagudisowinun_bosojilupo.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/1/0428/8577/5519/files/64670000603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6318/1473/files/xekulonovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8640/5022/files/pajotamikegibowodosaralop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/logimaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2702/8375/files/43678818234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/vufetibibodelubenejido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/76168090613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9406/3770/files/35550088861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2197/6220/files/bemanoribonorekaxovubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/cinema_4d_free_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6056/0025/files/tasamufufifuvinumezuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/2306333073.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
🗂 Part of campaign: audiblethought.com 3 samples

Related samples 3

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_off00005490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5490 5012 bytes
SHA-256: f6e88a2d6f3b6c16cf9dd2380b0462e152bbbef305e0277b764e3da6dea05939
font_01_sfnt_off0000656a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x656A 9412 bytes
SHA-256: 6982bf2f21603422d6cbabded720e756564a5aa4a0463c00110d3af3816da2dd

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