Malicious PDF — malware analysis report

Static analysis result for SHA-256 43ad8f9e74817465…

MALICIOUS

PDF

112.4 KB Authoring application: LibreOffice
MD5: 4aa2d78aec018f6897f5ab62b0c6edd9 SHA-1: 09640b40f7a4299df40d27058f989fb807dd6af2 SHA-256: 43ad8f9e74817465d257bc669bae07f7e8584e83315999c2a1d8f5cac2820aac
148 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body also contains urgency and callback lures, suggesting a phishing or scam attempt. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious classification. The primary attack pattern involves directing users to a network of external URLs.

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 http://empowerforimpact.com/uploads/1/3/0/7/130738913/9929785.pdf
    • http://fairbanks.rentals/uploads/1/3/0/7/130775624/6019274.pdf
    • http://internetstudiescenter.net/uploads/1/3/0/5/130551457/73cd4803471.pdf
    • http://naditesar.2bratika.ru/uploads/2020/01/28/793024.pdf
    • http://mitchheaslipfitness.com/uploads/1/3/0/4/130436224/vidurajuzaxu-ditun-kimekarukix-xubunegeziku.pdf
    • http://planettammy.com/uploads/1/3/0/3/130313339/weleborom_pasof_buvunap_depuvaduguna.pdf
    • http://beachhousemedia.us/uploads/1/3/0/6/130603838/vopixamajod.pdf
    • http://mikaren.com/uploads/1/3/0/5/130545882/6601241.pdf
    • http://sedaniwu.privat-market.ru/uploads/2020/01/28/526842.pdf
    • http://bestbudscards.com/uploads/1/3/0/7/130739833/tukepakiwu.pdf
    • http://wildrosekitchen.org/uploads/1/3/0/5/130590122/7267997.pdf
    • http://marcellawatson.com/uploads/1/3/0/2/130271137/984917.pdf
    • http://mysoundcollective.com/uploads/1/3/0/7/130740072/130740072.html#inferior+infarct+ecg+nstemi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001461.bin
e201b1d56b3a62cb2132415f2402f8d13b23ce1d028b188ff03659eae7ca94dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1461 10360 bytes
font_01_sfnt_off0000f186.bin
c048ac4ed90d63bfae46472f65f9cf6fc0bd5e75369f2d8f28771a6d96a2731c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF186 3156 bytes

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