Malicious PDF — malware analysis report

Static analysis result for SHA-256 c75b19c90e42a482…

MALICIOUS

PDF

38.2 KB Created: 2020-08-18 20:40:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 314332bd5020a5206aa2e4173f12141a SHA-1: 4222e069efe1b673023d87ab5ac063c11e634c61 SHA-256: c75b19c90e42a482d8902396e3967f431dcdee8b2d1b3fe95eff8509d9e475cc
152 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs. The primary redirector link, https://ttraff.cc/pify?keyword=dean+lewis+waves+piano+sheet+music+free, is flagged as malicious. The document's structure and the presence of numerous links suggest a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=dean+lewis+waves+piano+sheet+music+free
    • http://files.snifflesclownsupplies.com/uploads/1/3/1/8/131857791/begebipirenu.pdf
    • http://mupis.freezeyogurtbar.com/uploads/1/3/0/8/130874493/wabavalagara_bufukifijaxe_gasakizusuj.pdf
    • http://files.jonathanpschwartz.com/uploads/1/3/0/7/130775959/zoloxemel-ziranufalazuvi-riwimakevatupa.pdf
    • http://files.emanuelaaureli.com/uploads/1/3/2/3/132302710/3397372.pdf
    • https://cdn.shopify.com/s/files/1/0432/7312/6052/files/viwupuvejabu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0210/0886/files/14409018648.pdf
    • https://cdn.shopify.com/s/files/1/0428/7214/4038/files/rikumekujegiforipuxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7977/0019/files/14690200449.pdf
    • https://cdn.shopify.com/s/files/1/0437/0871/1080/files/52576306996.pdf
    • https://cdn.shopify.com/s/files/1/0437/5950/1464/files/derivatives_analytics_with_python.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87463685859.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/runuvokozemi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8784/7843/files/43328518152.pdf
    • https://cdn.shopify.com/s/files/1/0434/8621/6352/files/funoloboweketira.pdf
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/39558951874.pdf
    • https://cdn.shopify.com/s/files/1/0433/2971/6374/files/certificat_de_cession_vhicule_occasion.pdf
    • https://cdn.shopify.com/s/files/1/0432/0192/1184/files/36275897781.pdf
    • https://cdn.shopify.com/s/files/1/0446/8968/6681/files/antologia_de_cuentos_espaoles.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/45877982254.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005688.bin
44075dd6b2f0d8e3e8e6a7b0e8d539b8535fe525f73e9413182a7a4ac914a19d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5688 5404 bytes
font_01_sfnt_off000068dd.bin
4534fb2065075e00a68eedebb6deb47ba4feb82c3b5907a03aa85f2f1f10b2d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68DD 10180 bytes

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