Malicious PDF — malware analysis report

Static analysis result for SHA-256 3755eb6abdd71f2c…

MALICIOUS

PDF

49.9 KB Created: 2020-08-09 10:44:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 13a3695d7ef0d2668a7287d7c5996dda SHA-1: 7cae6f7bdc423a2d272e8537df7900517b7ea575 SHA-256: 3755eb6abdd71f2c9c0b8a1ac757d3b81b7797426b48e2a10b7f902e273d0418
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=simple+application+letter+pdf'. Additionally, it features a large number of embedded external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL and references to other PDF files, reinforcing the redirection and potential phishing or malware delivery 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.cc/pify?keyword=simple+application+letter+pdf In PDF document text
    • http://files.themauricejonesagency.com/uploads/1/3/0/7/130739614/14dce8503d16ef9.pdfIn PDF document text
    • http://funusa.monumentvillageoriginal.org/uploads/1/3/1/4/131483281/jamuniwafigupuredude.pdfIn PDF document text
    • http://files.stthomasartguild.com/uploads/1/3/0/9/130969306/a3a606.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3062/5947/files/psychological_effects_of_bullying.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/44226806801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/gomozulajul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2574/4547/files/3094551078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5662/5829/files/lodaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4125/0714/files/10347178260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9947/0486/files/ret_paladin_pvp_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9744/6816/files/xukebosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9255/7467/files/82702357045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/savage_divide_treasure_map_8.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7626 5016 bytes
SHA-256: b53f8a00305cbb2d2506e8ce1abcb3415fc18c1ccd202560e8c3a5f0cdeb8525
font_01_sfnt_off00008701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8701 11036 bytes
SHA-256: bc069e5a85f029e97c57f2f9ba96a1f7d3c1d687c62f819b3e94469207b9d59e
font_02_sfnt_off0000acc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACC0 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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