Malicious PDF — malware analysis report

Static analysis result for SHA-256 31747c3a8103b607…

MALICIOUS

PDF

41.1 KB Created: 2020-08-07 23:20:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d318c06c4f4b6e7b13bb3d2e243e0f96 SHA-1: 73babbc8f57e20429c2ba59272d7b27843b3063b SHA-256: 31747c3a8103b6074765a1fc9d5426d04e24d0a731c52ea9b827e7556ae9f56e
140 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=bacteriologia+y+virologia+veterinaria+merchant+pdf', which is a critical finding. Additionally, the document exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The presence of a callback lure suggests a potential phishing or social engineering attempt. No scripts were extracted from this sample.

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=bacteriologia+y+virologia+veterinaria+merchant+pdf
    • http://files.theatremidwest.org/uploads/1/3/1/3/131384436/duwisekuxa_noxitudo_tiwagejizifu_sobumaluri.pdf
    • http://files.doggiestylezinc.com/uploads/1/3/1/3/131384663/6210112.pdf
    • http://files.vanderphotography.com/uploads/1/3/0/9/130969169/sinum.pdf
    • https://cdn.shopify.com/s/files/1/0434/0740/9308/files/sonic_unleashed_mobile.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/cpu_temp_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0432/7764/8027/files/99125250279.pdf
    • https://cdn.shopify.com/s/files/1/0433/3980/8922/files/kesotikasafoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20136550696.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/nezoguzazopopegajuxu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/15794100407.pdf
    • https://cdn.shopify.com/s/files/1/0429/0831/9903/files/minecraft_forum_ps3.pdf
    • https://cdn.shopify.com/s/files/1/0431/5119/6315/files/86914960089.pdf
    • https://cdn.shopify.com/s/files/1/0438/3680/1181/files/tumuterixidofij.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/jazasugaraxodalupidenugab.pdf
    • https://cdn.shopify.com/s/files/1/0434/4306/0901/files/ascii_table_256.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/rizelobiwoto.pdf
    • https://cdn.shopify.com/s/files/1/0437/7716/3426/files/dozadujoku.pdf
    • https://cdn.shopify.com/s/files/1/0429/2008/3612/files/70112848394.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_off000053b7.bin
a0cb393b2e27c5dd7a91bae3cd3a46bd1c3e700fa84624f6f8429f7b4b751463		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53B7 5392 bytes
font_01_sfnt_off000065e2.bin
4a3392acb32f9788e693121b014b24d35a679bfc4b47d8f97567e5706a8440b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E2 10288 bytes
font_02_sfnt_off00008907.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8907 4324 bytes

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