Malicious PDF — malware analysis report

Static analysis result for SHA-256 08893eb827457330…

MALICIOUS

PDF

45.4 KB Created: 2020-08-22 16:03:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50e377047b1813603ca8e02c27419834 SHA-1: b00de9f401d5aa0cfc47db689171a2820a24c374 SHA-256: 08893eb827457330b6832303b9274c58ceb7a9f7a5d9ba054258fecf4859387b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a redirector service, which is a common tactic for distributing malware or phishing pages. The document body, though heavily obfuscated, contains text related to 'Ableton live 10.1.3' and a URL that appears to be a lure. The presence of numerous external PDF links, some pointing to potentially benign Shopify domains, suggests a link farm or SEO poisoning attempt to increase visibility of the malicious redirector.

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=ableton+live+10.+1.+3
    • http://files.natureswaypetcare.com/uploads/1/3/0/8/130814856/d0731930358012a.pdf
    • http://nuwetu.onesweetbakingco.com/uploads/1/3/0/9/130969060/364433.pdf
    • http://pafubesel.alexandrahaleyart.com/uploads/1/3/0/8/130874679/2381894.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1249/7303/files/46589973612.pdf
    • https://cdn.shopify.com/s/files/1/0431/6420/5216/files/alliance_leveling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/6827/6384/files/lobexevutojisulirix.pdf
    • https://cdn.shopify.com/s/files/1/0461/5156/5475/files/66846180904.pdf
    • https://cdn.shopify.com/s/files/1/0428/5041/8847/files/80711582676.pdf
    • https://cdn.shopify.com/s/files/1/0431/7967/1718/files/temopopoxizukatakubome.pdf
    • https://cdn.shopify.com/s/files/1/0445/4429/5076/files/knee_meniscus_tear_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0437/0687/6055/files/air_adobe_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9927/files/famifimexomosiranugo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8792/8223/files/pawozutexikabudekijola.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zovoxumaf.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_off00006a2a.bin
03f75bf12682e692790311ac371d843e99a25e8e08b576cf06e0b76361bcbf1c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2A 4772 bytes
font_01_sfnt_off00007a91.bin
819d9894fbc7534a4611c9b4b81fb64be789554c221a2191b0f48f3482521aa0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A91 15128 bytes