Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb64d51d71574985…

MALICIOUS

PDF

42.8 KB Authoring application: GIMP
MD5: 4535bbc42a18444cbd1625055a8d1d6d SHA-1: a4764ad5ae46bceeb6ad4d5f67120187faea3fa1 SHA-256: fb64d51d7157498547b151995226669a0ec5eb11112b893ef4ce5f3aa5ce9e8f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification. No scripts were extracted from this sample, and the document body content is heavily obfuscated and truncated, preventing a more detailed analysis of the immediate user-facing lure.

Heuristics 3

  • 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
  • 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://croninsformwork.com/uploads/1/3/0/2/130289002/denudajifono.pdf
    • http://americasmostwasted.com/uploads/1/3/0/6/130604448/2320325.pdf
    • http://abgymcr.com/uploads/1/3/0/2/130273983/3320159.pdf
    • http://digitaltechnologieswa.com/uploads/1/3/0/6/130604651/7458621.pdf
    • http://leegiles.net/uploads/1/3/0/8/130813658/1403415.pdf
    • http://drinkcomkom.com/uploads/1/3/0/5/130551882/6655106.pdf
    • http://expresshomeimprovement.net/uploads/1/3/0/9/130969034/6839274.pdf
    • http://2020cruises.com/uploads/1/3/0/6/130621786/darifemopuxakabovoz.pdf
    • http://freeheartclinic.com/uploads/1/3/0/2/130291545/6a60f1bd6.pdf
    • http://kentuckystrengthfarm.com/uploads/1/3/0/3/130323479/2e66418b673950.pdf
    • http://nabeelreviews.com/uploads/1/3/0/6/130621293/38f20b10.pdf
    • http://moldaufamily.com/uploads/1/3/0/2/130288318/307395.pdf
    • http://cutcliffes.com/uploads/1/3/0/6/130621119/bovuda.pdf
    • http://www.lamorita.org/uploads/1/3/0/9/130969158/6b296d.pdf
    • http://catalystconsultingengineers.com/uploads/1/3/0/6/130604416/desakagutuwerexu.pdf
    • http://cabinetmakersipswich.com.au/uploads/1/3/0/8/130874413/refidinosotesux.pdf
    • http://5047lankershim.com/uploads/1/3/0/5/130588905/9016189.pdf
    • http://davidgarson.com/uploads/1/3/0/7/130738711/sojekasewisuwutosapa.pdf
    • http://emilydeweyphotography.com/uploads/1/3/0/7/130776677/f91c80ce92eeb27.pdf
    • http://newbeginningsinvestorsllc.com/uploads/1/3/0/6/130620728/wagewalamorim_jedivedo_misavidelaru_sawem.pdf
    • http://cluedetectivepuzzleagency.club/uploads/1/3/0/7/130740011/9a9d9.pdf
    • http://educatingcritically.com/uploads/1/3/0/9/130969026/92f382b1.pdf
    • http://wcd-dv5uqfy2.mgh-r.ch/uploads/1/3/0/4/130476766/130476766.html#combine+multiple+pdf+files+into+one+windows+10

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004654.bin
4ecfd16417970fef9f0fd00da1bd48458757634f0b9d099ddcc27db2b0ce83ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4654 7916 bytes

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