Malicious PDF — malware analysis report

Static analysis result for SHA-256 eabd45cca5892898…

MALICIOUS

PDF

43.0 KB Created: 2020-08-26 11:52:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f2ef9fe5d289309fa1bbc30b8be514d SHA-1: 35bf98e9fc7d36c07a665d248f12ce4430b6e64f SHA-256: eabd45cca58928982857cc4722359fe2ca1a060bd3ca10d15d1ade4a2e110669
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its structure, which includes a large number of embedded links. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=english+grammar+easy+way+to+learn+pd'. Another critical heuristic indicates a PDF link farm, with many links pointing to shopify domains, likely as a way to obscure the malicious redirector. The document body contains garbled text but also includes the malicious URL and several benign-looking Shopify URLs, suggesting a lure to disguise the malicious intent.

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=english+grammar+easy+way+to+learn+pd
    • http://rorupol.thecatsmeowtarotandtalismans.com/uploads/1/3/1/0/131070027/9267947.pdf
    • http://bewalib.camillahouse.com/uploads/1/3/1/4/131408999/nakigukomalije_sutenog_fadaj.pdf
    • http://files.boneschool.net/uploads/1/3/1/6/131636712/1d5730d.pdf
    • http://jezovakad.dngdecor.com/uploads/1/3/1/3/131383483/bafag-xelizobo-tukixopij.pdf
    • http://files.lachicanalaundrypictures.com/uploads/1/3/0/7/130739570/zamumovil.pdf
    • https://cdn.shopify.com/s/files/1/0437/9816/7713/files/855-_855-_4575.pdf
    • https://cdn.shopify.com/s/files/1/0432/6303/3502/files/62325420720.pdf
    • https://cdn.shopify.com/s/files/1/0434/3159/2102/files/86274383659.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/92161478626.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/30719232637.pdf
    • https://cdn.shopify.com/s/files/1/0429/9676/0730/files/thinking_skills.pdf
    • https://cdn.shopify.com/s/files/1/0434/7514/0761/files/90848024947.pdf
    • https://cdn.shopify.com/s/files/1/0431/3514/0007/files/94148945840.pdf
    • https://cdn.shopify.com/s/files/1/0431/4536/3610/files/dryer_sheets_bed_bug_repellent.pdf
    • https://cdn.shopify.com/s/files/1/0437/6290/9335/files/10736179462.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8548/files/digivajolodozo.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_off000069cf.bin
5ac15cbc73fda45c368a48751650c130302c093df8652838762395ceeb880349
pdf-font-stream PDF embedded font (sfnt) at offset 0x69CF 5524 bytes
font_01_sfnt_off00007c7d.bin
594cc14eb76d404fe4585ecc7d14da80c5f7827e50511ab8e964bab18044b011
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7D 10268 bytes