Malicious PDF — malware analysis report

Static analysis result for SHA-256 0daa1114ad6af30e…

MALICIOUS

PDF

47.8 KB Created: 2020-08-15 01:23:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a39075071310b9b97f29284a19cb581a SHA-1: a6f0c50e0f0b09c203011b1888fcbca2e2ee9327 SHA-256: 0daa1114ad6af30edc513d725bbda4c19fade3acb9470ab6a95cfe8497c94a18
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of the primary links directs to a known malicious redirector at 'ttraff.com'. The document body, though partially corrupted, contains the same keywords as the malicious URL, suggesting a SEO-based link farm or phishing lure. No scripts were extracted, but the presence of numerous external links indicates an attempt to redirect the user to potentially malicious content.

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.com/pify?keyword=rubber+sheet+suppliers+in+saudi+arabia
    • http://files.garfielddiamondsports.org/uploads/1/3/0/7/130739772/f07364cb.pdf
    • http://ruzozeka.teamnaomigetwellnow.ca/uploads/1/3/2/7/132740228/jorojesumexululala.pdf
    • http://files.irelandandchina.com/uploads/1/3/2/7/132712315/9401752.pdf
    • http://files.passafling.com/uploads/1/3/0/7/130776828/8214b7e830.pdf
    • http://files.wsopp.org/uploads/1/3/1/4/131483281/xufinidevezuwen-nuvavulure.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/55164421319.pdf
    • https://cdn.shopify.com/s/files/1/0433/5550/4795/files/67225185427.pdf
    • https://cdn.shopify.com/s/files/1/0432/2030/4034/files/comment_acceder_au_dark_web.pdf
    • https://cdn.shopify.com/s/files/1/0430/9444/2145/files/21325743700.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8758/files/veritokefadaxepovovunevex.pdf
    • https://cdn.shopify.com/s/files/1/0433/8935/4142/files/zavezipigobeziv.pdf
    • https://cdn.shopify.com/s/files/1/0428/7869/7631/files/fate_undiscovered_realms.pdf
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/9791967117.pdf
    • https://cdn.shopify.com/s/files/1/0433/3862/9288/files/81784835681.pdf
    • https://cdn.shopify.com/s/files/1/0449/3590/5448/files/shl_deductive_reasoning_test_answers.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_off00007c92.bin
aee34a474334975b8cc5c50ae8e60a97f4c96dfad12376092b74ba5e57bf2d80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C92 5196 bytes
font_01_sfnt_off00008e28.bin
df4550d865cbef391fa3398475f014937d2ca7902c98f866c354efc6b6cff3e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E28 10492 bytes

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