Malicious PDF — malware analysis report

Static analysis result for SHA-256 948634fc89dac44d…

MALICIOUS

PDF

68.1 KB Created: 2020-08-11 21:27:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c268115ec453c724ca280d2c62df28dc SHA-1: 19f5322ae93b8f7da84da0782cbaea3eafdd40ef SHA-256: 948634fc89dac44d10ed25abc933a153ba8c615b4dbcfcbb79cd42d1705bfbd7
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily corrupted, appears to contain text related to a 'Catholic holy bible in english pdf' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=catholic+holy+bible+in+english+pdf
    • http://tofoxifiw.jcgreflexology.com/uploads/1/3/1/6/131606289/a792bb539a.pdf
    • http://files.hillsofnotts.com/uploads/1/3/1/1/131164308/jegumuzozavidorojol.pdf
    • http://xepitusav.sugarygiggles.com/uploads/1/3/2/8/132814930/4671135.pdf
    • http://files.brightideas4u.com/uploads/1/3/1/6/131636930/3630791.pdf
    • https://cdn.shopify.com/s/files/1/0437/6769/3474/files/resize_image_illustrator.pdf
    • https://cdn.shopify.com/s/files/1/0434/0793/3603/files/24925866219.pdf
    • https://cdn.shopify.com/s/files/1/0432/1758/4283/files/mage_of_zamorak_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0430/3313/3209/files/pivorafiwoxilomenivomijip.pdf
    • https://cdn.shopify.com/s/files/1/0435/6263/1326/files/magazine_newspaper.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9034/files/wagev.pdf
    • https://cdn.shopify.com/s/files/1/0429/3319/0823/files/24451814459.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lorabo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43106273748.pdf
    • https://cdn.shopify.com/s/files/1/0431/6292/7253/files/ielts_academic_writing_word_list.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_off0000b3b1.bin
d142a4ef64e2378af4f1cc9207d3f84b4a7f28df8046fa4d1dd04152c7c52020		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3B1 5372 bytes
font_01_sfnt_off0000c5f3.bin
edb3447c09817f38edd6e0156e3c3e4c395c6aeb9fef47ade75571a17fa21ea4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5F3 15112 bytes
font_02_sfnt_off0000f4f6.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F6 4324 bytes

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