Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c09bfb5aeb16a14…

MALICIOUS

PDF

32.3 KB Created: 2020-08-12 16:14:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 54698ad889d4ae3dad5951901cc2ac6d SHA-1: 4f5ed91a6d92780b51b11f9afd738f625bc4fac2 SHA-256: 1c09bfb5aeb16a147d7043ddbdea45d41aadacaacc25ff2bc7327ea808a3816d
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector to ttraff.com, indicating a link farm or phishing lure. The document body, though heavily obfuscated, contains the same URL that is also present in the heuristics. No scripts were extracted from this sample. The primary attack vector appears to be directing users to malicious infrastructure via embedded links.

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/wb?keyword=food%20chain%20and%20food%20web%20worksheet%20ks3 In PDF document text
    • http://files.wellsmusicpublishers.com/uploads/1/3/0/8/130874067/7865840.pdfIn PDF document text
    • http://files.keelancole.com/uploads/1/3/1/4/131453395/1090898.pdfIn PDF document text
    • http://files.happygrocers.co/uploads/1/3/1/6/131637016/raliror.pdfIn PDF document text
    • http://files.piercingcrossfit.com/uploads/1/3/1/8/131856191/eeab3.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/1/0428/3393/6547/files/21847090785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2172/9955/files/rofixozobumos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74535711799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3886/6593/files/difference_between_measurement_assessment_and_evaluation_in_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/cuales_son_los_acuerdos_de_paz_en_guatemala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3376/3746/files/senisutizujugemitet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/depodudoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1254/6975/files/movavi_video_converter_activation_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4431/6070/files/vepafubenazesapogajid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/binomische_formeln_bungen_klasse_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7360/9636/files/voice_changer_macintosh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8483/1125/files/1293248083.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_off0000442b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x442B 5492 bytes
SHA-256: 85d0db01e819a7e4451cb470c22cfa011faa2a9ea3e450ffe4cdd99170080d07
font_01_sfnt_off000056e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56E0 8632 bytes
SHA-256: 7d9d2a69683d951a5b2a45f7b45b1dd31d76751af67e84b9062de5d75792c28f

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