Malicious PDF — malware analysis report

Static analysis result for SHA-256 9792431d8dab7ae6…

MALICIOUS

PDF

49.7 KB Created: 2020-08-10 07:03:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 874debd2fad87e742e2276433539630e SHA-1: ec28ae3fba88da351a885f759b1b99b4037b0201 SHA-256: 9792431d8dab7ae614052541660931e9b319b7817c0a57174f6d20ee78e929b2
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.cc/pify?keyword=revised+schedule+6+balance+sheet+format+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. No scripts were extracted from this sample.

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=revised+schedule+6+balance+sheet+format+pdf
    • http://files.porvenirmassacre.org/uploads/1/3/1/1/131164260/7536692.pdf
    • http://files.hanseatic-avs.de/uploads/1/3/1/0/131071157/ludolif.pdf
    • http://vevoju.downtowndairyqueen.com/uploads/1/3/0/9/130969060/bawowegusil-bopewepefarala.pdf
    • http://files.penetratorfins.com/uploads/1/3/1/0/131070581/gebupebirarak.pdf
    • https://cdn.shopify.com/s/files/1/0438/2208/8354/files/lamiwepu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/pinojovulutemefubikaka.pdf
    • https://cdn.shopify.com/s/files/1/0428/5467/8687/files/flash_trek_broken_mirror.pdf
    • https://cdn.shopify.com/s/files/1/0430/4466/7553/files/gsm_and_cdma_technology.pdf
    • https://cdn.shopify.com/s/files/1/0451/0951/0297/files/genetica_medicala_thompson.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/arranging_things.pdf
    • https://cdn.shopify.com/s/files/1/0434/3637/6214/files/83528373045.pdf
    • https://cdn.shopify.com/s/files/1/0435/6790/6975/files/simplification_and_approximation_for_ibps_po.pdf
    • https://cdn.shopify.com/s/files/1/0435/3923/4967/files/22390600243.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6141/files/rafuvo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0485/3406/files/88264773888.pdf
    • https://cdn.shopify.com/s/files/1/0428/7194/7430/files/917941372.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000764c.bin
c888531f73a488f05f1e3c8110fbaecd529ced665330733e2396ed9ed0e006cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x764C 5640 bytes
font_01_sfnt_off00008940.bin
5ef12bf1fbcb5db7cb74458180feb55ba2ef823768576799e020c2313c713142
pdf-font-stream PDF embedded font (sfnt) at offset 0x8940 9908 bytes
font_02_sfnt_off0000ab24.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB24 4324 bytes