Malicious PDF — malware analysis report

Static analysis result for SHA-256 d571e517b3595962…

MALICIOUS

PDF

43.5 KB Created: 2020-08-08 04:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ad37f4fb0ae16e87bf8860a42204e48 SHA-1: 9cbc13575165a30318e56287e985114e0041e7e2 SHA-256: d571e517b359596230a27133ca4b36b988ac996a6aadeefdfb2b6d7f17c0aaca
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.com/pify?keyword=f+b+service+department+pdf'. It also exhibits characteristics of a PDF link farm, with numerous embedded links pointing to various external PDF files, many hosted on Shopify domains. The document body, though heavily obfuscated, contains the same suspicious URL, indicating a deliberate attempt to lure users to malicious infrastructure.

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.com/pify?keyword=f+b+service+department+pdf
    • http://files.friendsnorthcreekforest.com/uploads/1/3/0/8/130813094/witawuzibeti.pdf
    • http://dezuma.gregschroederwrites.com/uploads/1/3/1/0/131069934/tojaketap.pdf
    • http://files.dorangoats.com/uploads/1/3/2/3/132302876/baramerinupow.pdf
    • http://vopodin.outspokenmarket.com/uploads/1/3/0/8/130813834/4a9bac8.pdf
    • http://files.owenstaxlouisville.com/uploads/1/3/1/4/131453633/fupexanigikun-nolasoboj-gadigenerawuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3020/files/lileviwakemikekinor.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7741/files/adenoma_hipofisario_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/digeximipofezukozugex.pdf
    • https://cdn.shopify.com/s/files/1/0428/7892/7014/files/10166438354.pdf
    • https://cdn.shopify.com/s/files/1/0431/9484/3298/files/beregiromegakujos.pdf
    • https://cdn.shopify.com/s/files/1/0431/5679/9648/files/bimaxejime.pdf
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/96800217222.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/genexirod.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2953/files/6542674588.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1733/files/sizefeza.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/80386667862.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_off00006a82.bin
748f4aa7f10c93df57aaaf7046b904a6111595e7e7a08b295fa1250dae5866b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A82 5424 bytes
font_01_sfnt_off00007cd8.bin
c9312abd6295e6b0d7201dcc56777acf22df626686a2a87976e75dfa606a374c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD8 10704 bytes

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