Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d67357fe832234…

MALICIOUS

PDF

35.8 KB Created: 2020-08-16 21:02:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ad2bfc0f4f407a13c65216febddd2f8 SHA-1: 38979d4e90238bde56175a4c5b9ac581711bb8f1 SHA-256: 02d67357fe8322344ec1915597e8a2ac473cbadb75781d0060e2b3c87abf5bcb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The primary malicious URL is https://ttraff.ru/pify?keyword=trepdee+beng+beng+ft+peruzzi, which likely serves as a gateway to further malicious content or phishing pages. The presence of many Shopify links suggests an attempt to disguise malicious activity within a seemingly legitimate platform.

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.ru/pify?keyword=trepdee+beng+beng+ft+peruzzi
    • http://files.iannettilab.net/uploads/1/3/1/6/131606335/3824957.pdf
    • http://gerob.mortgageinsuranceontario.ca/uploads/1/3/1/4/131453329/fed3a7bd1.pdf
    • http://babek.svimpossibledream.com/uploads/1/3/1/3/131380729/393306.pdf
    • http://files.ashiharakaratesg.com/uploads/1/3/0/7/130776592/623c827b.pdf
    • http://files.ccmooresville.com/uploads/1/3/1/3/131381819/tanupip.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/2768/5799/files/dedokovabekosexi.pdf
    • https://cdn.shopify.com/s/files/1/0437/9577/5650/files/xejexozu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9617/7816/files/tia_942.pdf
    • https://cdn.shopify.com/s/files/1/0439/6577/6030/files/30389999567.pdf
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/44716143603.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/how_to_draw_motion_blur.pdf
    • https://cdn.shopify.com/s/files/1/0436/4579/6512/files/java_calculator_program.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kewosa.pdf
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/skyrim_chim_mod.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/vojikeboboriran.pdf
    • https://cdn.shopify.com/s/files/1/0429/3056/9382/files/8888907853.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ed0.bin
646797f8068f475dfe42d7b97b0ff50709b0883dc5bc9591446e29dce015f73d
pdf-font-stream PDF embedded font (sfnt) at offset 0x4ED0 4928 bytes
font_01_sfnt_off00005fa6.bin
365052bb2ce595114e019c5040cd23440b0a4c02e49acc9882c7c1dcbd49b8ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA6 10148 bytes