Malicious PDF — malware analysis report

Static analysis result for SHA-256 129bea16056d4f6e…

MALICIOUS

PDF

40.4 KB Created: 2020-08-01 13:14:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 51de7407783149e34ed34f063bfee3a0 SHA-1: d86bb937693aff532dd46a33c18b5054f8913512 SHA-256: 129bea16056d4f6e9148fd83461f7a59ec69a400733498e89cf112d62b971589
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and a list of other URLs, suggesting a link farm designed to drive traffic to malicious sites. The ML classifier also strongly indicated maliciousness.

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=elizabeth+pe%2525+c3%2525+b1a In PDF document text
    • http://files.acbae.com/uploads/1/3/1/3/131398234/vameziwo_wabunug.pdfIn PDF document text
    • http://files.latehose.com/uploads/1/3/2/6/132681885/2972995.pdfIn PDF document text
    • http://files.sprinttriathlonchestnutforks.com/uploads/1/3/1/3/131383456/1034879.pdfIn PDF document text
    • http://files.morrowcountyfair.org/uploads/1/3/0/8/130874678/7449432.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/1/0430/6750/6849/files/kobetuwok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5269/5703/files/22285188934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2868/3672/files/revenge_minecraft_parody_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3464/7445/files/28918013705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6924/2534/files/96387848469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/rizukuxujelewabonofosajad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6805/4940/files/32544860347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/kedoparamadetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/fopudavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5812/7270/files/48968513431.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: sprinttriathlonchestnutforks.com 5 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_off000060ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EF 5344 bytes
SHA-256: af291f24f5c65c94718ae85c8af1d206e81afc9656adbf1312c5d7e7abac8faa
font_01_sfnt_off00007316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7316 9956 bytes
SHA-256: 868e7509ed8c23590ddeebd6d78fb6ca37fc4260cb08a551186570cc6f5b5841

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