Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ac97746653b8de6…

MALICIOUS

PDF

51.0 KB Created: 2020-08-14 05:17:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56dd49e416feabcd8cb5fcbde8294750 SHA-1: f99c4ee76e52d700ec3bd9094728c34b8d03c16f SHA-256: 7ac97746653b8de6293389f7cb56503ff08f79f892740d90a11b9681ec4d7c8b
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, pointing to 'https://ttraff.ru/pify?keyword=crystal+report+runtime+version+10.+5'. This URL is likely used to lure victims into downloading further malware or submitting credentials. The document also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm abuse to improve search engine ranking for malicious content. 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.ru/pify?keyword=crystal+report+runtime+version+10.+5
    • http://files.patprofit.com/uploads/1/3/0/7/130775712/967025.pdf
    • http://files.ellenfridland.com/uploads/1/3/1/6/131637219/vijetuk.pdf
    • http://files.guitarsandbourbon.com/uploads/1/3/1/3/131383837/rukizupezibofaf_suwetepimow_ranuk.pdf
    • http://turux.scottamorris.com/uploads/1/3/0/7/130740062/divutakopotizek_toxanikexawokub_ziboxufa.pdf
    • http://files.dbassettroofing.com/uploads/1/3/2/6/132682990/seloful-jujevimovukivig-biwokosunar-litujevudogubo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/4712805132.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38935964995.pdf
    • https://cdn.shopify.com/s/files/1/0434/3965/3030/files/blue_parrot_headset.pdf
    • https://cdn.shopify.com/s/files/1/0431/9880/8224/files/60635589491.pdf
    • https://cdn.shopify.com/s/files/1/0431/3491/0618/files/33949904069.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/82578637237.pdf
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/74837521807.pdf
    • https://cdn.shopify.com/s/files/1/0432/2364/6365/files/88709980221.pdf
    • https://cdn.shopify.com/s/files/1/0438/2228/4960/files/conceptual_chemistry_5th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/7175/7718/files/melelubup.pdf
    • https://cdn.shopify.com/s/files/1/0440/7400/8741/files/depipujavawedogelu.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_off0000795e.bin
6b33ff188d28154d6dbdbf812d80b7b44c2f9bc5adfe8bd5e5c9793c1c79fec7
pdf-font-stream PDF embedded font (sfnt) at offset 0x795E 6476 bytes
font_01_sfnt_off00008966.bin
87b503eb224a9d2fdbd2c53c93cf5d8d5d831bf18c0e577da361f2af24521d86
pdf-font-stream PDF embedded font (sfnt) at offset 0x8966 5380 bytes
font_02_sfnt_off00009bac.bin
b63943201113e216a04fda1c7189ed593c7434edeb5ca19723be59d5f7890ba3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BAC 10144 bytes