Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf787c062658747…

MALICIOUS

PDF

33.9 KB Created: 2020-08-23 02:44:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c196d5fd7a776c78d05222ee73aa1b6 SHA-1: 7aaf71023ed86fde2230c67534ccdcdc4677023d SHA-256: ccf787c062658747f6c6fb6c258cb23da37de3411c013c290e5db47ae73469a8
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector at 'https://ttraff.com/pify?keyword=yamaleela+2+audio+songs+free'. Another critical heuristic identified a PDF link farm hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute malicious content. The document body, though heavily obfuscated, contains text related to 'Yamaleela 2 audio songs free' and the authoring application 'wkhtmltopdf', likely serving as a lure to encourage clicks on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=yamaleela+2+audio+songs+free In PDF document text
    • http://xoduler.libertytechcharter.org/uploads/1/3/1/4/131483152/5a99507b.pdfIn PDF document text
    • http://files.anchorfloral.com/uploads/1/3/2/6/132695365/kosiru_loxeporasu_sunija_vobuzitikesi.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/1/0432/7486/2758/files/54042821145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7122/5502/files/24738954110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/1188/2398/files/answer_back_disrespectfully_crossword.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/rukuzik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0182/9797/files/19584938941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2512/9894/files/biwunatop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/bimepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/jokuwoxisubazifexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5481/5640/files/rawipiko.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: bolsterrogers.com 6 samples

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_off00004603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4603 5320 bytes
SHA-256: eac12eb6f0359274e60dcc9eb253349487e43dab3535d73a3ab4fe59a63a8892
font_01_sfnt_off00005802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5802 9844 bytes
SHA-256: 7633aa2b315f76565f4ca655ac55a0a4da27bdbe1f124c5e9776940ac0a1a601

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