Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c1412b235cb38ed…

MALICIOUS

PDF

62.8 KB Created: 2020-08-04 13:19:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ae407fc47c5dd5cfc36df389dc239ce SHA-1: 8820c5141a7cd4bca02c51255bae55b9521f353c SHA-256: 8c1412b235cb38ed31cb6715ebeab1d8b4e5b9bebf833d55892fb6772d6e6ac2
140 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including a critical finding of a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that is also flagged as malicious. The presence of numerous external PDF links, some pointing to benign Shopify domains and others to unknown domains, suggests a link farm or redirection strategy. The 'SE_CALLBACK_LURE' heuristic further suggests a phishing or scam pretext.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=the+apocryphal+new+testament+pdf
    • http://files.justinankenbauer.com/uploads/1/3/0/7/130739947/boxuj.pdf
    • http://files.leeshearman.com/uploads/1/3/1/3/131398605/d369cd84e68d8a.pdf
    • http://files.erinmerrill.studio/uploads/1/3/1/3/131380236/tabasonabukafu-jijadowu.pdf
    • http://files.mattscharfdesign.com/uploads/1/3/0/8/130874582/4381488.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/44912398740.pdf
    • https://cdn.shopify.com/s/files/1/0429/5586/6263/files/bloxorz_level_33.pdf
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/modified_barthel_index_scale.pdf
    • https://cdn.shopify.com/s/files/1/0431/0564/8807/files/71955387797.pdf
    • https://cdn.shopify.com/s/files/1/0437/5796/1374/files/powedenipesidug.pdf
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/89451062514.pdf
    • https://cdn.shopify.com/s/files/1/0429/1097/4108/files/nabiwuvakutagadusijeza.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/6139540738.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32377204601.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xakisone.pdf
    • https://cdn.shopify.com/s/files/1/0430/7252/0353/files/97338446067.pdf
    • https://cdn.shopify.com/s/files/1/0433/7850/7934/files/57242800504.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_off0000b39a.bin
c0edb9527265331376a4d4dc8e1a794b74a05a3b4901e3283a4cabf53a9949dd
pdf-font-stream PDF embedded font (sfnt) at offset 0xB39A 5540 bytes
font_01_sfnt_off0000c659.bin
0baa22f49956e095b786b121f0ecabb7b59ca4d0b1fe78652d9cde3bd4137030
pdf-font-stream PDF embedded font (sfnt) at offset 0xC659 11968 bytes