Malicious PDF — malware analysis report

Static analysis result for SHA-256 526a64c318dbd85d…

MALICIOUS

PDF

52.7 KB Created: 2020-08-06 05:51:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8931579ceb345523d995978a9fdb2e5e SHA-1: bdbe82b3f56d54b11f24c9f24355e6b6d406acfe SHA-256: 526a64c318dbd85d65f65fc2c6a924274e9f843f77c493a18a0854fe325ac3cd
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector (ttraff.cc). The document body, though heavily obfuscated, contains text suggesting it is a lure for '3ds max shortcuts pdf free download'. This indicates a social engineering tactic to trick users into clicking malicious links. The presence of multiple Shopify URLs, while some are benign, suggests an attempt to blend malicious links with seemingly legitimate ones.

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=3ds+max+shortcuts+pdf+free+download In PDF document text
    • http://files.2ndchanceapartment.com/uploads/1/3/1/6/131606186/29c93.pdfIn PDF document text
    • http://files.rodinfarms.com/uploads/1/3/1/4/131407855/menevanememuko.pdfIn PDF document text
    • http://files.stonecoldqueen.com/uploads/1/3/0/7/130740571/b71bf2a54.pdfIn PDF document text
    • http://files.fithealthyyoufitness.com/uploads/1/3/0/9/130969371/lojiwu.pdfIn PDF document text
    • https://cheatography.comIn 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/1/0431/4156/2522/files/general_chemistry_lab_manual_answers_pearson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4318/2999/files/remove_watermark_linux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5380/0859/files/gajilukifuzaxum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/64806078252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3942/4665/files/nuzogimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1945/3095/files/skyrim_vampire_armor_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/83197055144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/42981897141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0464/9884/files/73509062578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/77740219563.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_off00008290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8290 5624 bytes
SHA-256: 97fe93b833c5d29292407a0df36b1aea228e9c5042c1ccd675c5691fd09c9ada
font_01_sfnt_off00009596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9596 15664 bytes
SHA-256: cdeb44fdb2de3293f718039a3fcf1444a2dc69a41271f6504b483604770ae138

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