Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9a092be093049b6…

MALICIOUS

PDF

37.5 KB Created: 2020-08-11 16:47:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84777370a67f2216859cb1c588c5def5 SHA-1: 925b267a31c474a9003a096b57e428b907480e0e SHA-256: b9a092be093049b60eae003d760eb4d46abd9ab1022cc869534758f8cf07a5ef
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Broken vessels chord chart pdf' and the malicious URL, suggesting a lure to a phishing or scam site. The presence of numerous external links, including the malicious one, indicates a link farm or redirection strategy to obscure the final malicious destination.

Heuristics 3

  • 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.
  • 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=broken+vessels+chord+chart+pdf
    • http://lirox.sebastianlarsen.com/uploads/1/3/1/1/131164250/4845531.pdf
    • http://files.thomas-irvine.com/uploads/1/3/0/8/130814831/loniwisutuf-sulas-lomaxesazo.pdf
    • http://files.teamfloridahoops.com/uploads/1/3/2/6/132681426/sodipegogodubitiwaje.pdf
    • http://files.texashollandlops.com/uploads/1/3/1/3/131379371/7953459.pdf
    • https://cdn.shopify.com/s/files/1/0435/6925/0463/files/76375661668.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/nerasilojusepowoxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mevadijuxirefasu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3758/1734/files/sowing_the_seeds_of_love_lyric.pdf
    • https://cdn.shopify.com/s/files/1/0430/3545/9738/files/xawiwobu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8264/5665/files/20600642251.pdf
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/57449764405.pdf
    • https://cdn.shopify.com/s/files/1/0431/5440/7578/files/76773599761.pdf
    • https://cdn.shopify.com/s/files/1/0432/2784/0669/files/madedepipopofubike.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/fatilexepinu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7645/files/stress_and_work_life_balance_in_the_workplace.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/mulotajumuvitokoz.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_off00004c29.bin
141c791059e49124e7a0b93652c8694e5e00ded346f25e9fb73ff93dc9902aeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C29 5416 bytes
font_01_sfnt_off00005e97.bin
0a1e83d8a5731b6f9bfd58c27bffc86280c62b86a7e06832dc9575f97c1df805		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E97 13724 bytes

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