Malicious PDF — malware analysis report

Static analysis result for SHA-256 8084f6f2053428f3…

MALICIOUS

PDF

40.0 KB Authoring application: pdf-parser
MD5: 89d7b0c19a9a9013b0bfddea8c15976b SHA-1: 2b3b2d8d4887c6adfff80916e7d86928ca560c23 SHA-256: 8084f6f2053428f3b0325670c28af55cc4fb8b3ff4d0cb52f7ba489adc78b161
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which is a common technique for SEO poisoning and driving traffic to malicious sites. ClamAV also detected this file as Pdf.Phishing.TtraffRobotInstall, further indicating a phishing or malicious traffic generation intent. The embedded links are the primary IOCs, pointing to various domains likely hosting malicious content.

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://wufutuji.nataliapetri.com/uploads/2020/01/29/nigen_fewaser_gavawokugor.pdf
    • http://whateverwelding.com/uploads/1/3/0/5/130550888/japirasipa_kikazatapide_gutuwuwadafef.pdf
    • http://thorntonheathcricket.co.uk/uploads/1/3/0/4/130435635/d60a063347.pdf
    • http://neharmanauthor.weebly.com/uploads/1/3/0/5/130588360/wunakatujuse.pdf
    • https://rizavolapixanef.weebly.com/uploads/1/3/0/6/130604823/4307257.pdf
    • http://zotunu.b-les-bel.su/uploads/2020/01/27/5092518.pdf
    • http://midwestlightingllc.com/uploads/1/3/0/3/130323996/b3601a8dfe29b.pdf
    • http://universalhypebrand.com/uploads/1/3/0/6/130620416/ragobitevus-ranakumugowin.pdf
    • http://thoughtandbelief.com/uploads/1/3/0/2/130287945/roxid_viviburoxowil.pdf
    • https://bugerugevufugu.weebly.com/uploads/1/3/0/3/130313103/2475049.pdf
    • http://bom.colorfulinkstudio.com/uploads/2020/01/28/rugavanekox-wutepe-toxevigabezerin.pdf
    • http://stphilipstheevangelist.org/uploads/1/3/0/6/130639573/moraxorin_daporogale.pdf
    • http://richardbrooksinvestigations.com/uploads/1/3/0/3/130313167/femero.pdf
    • https://wewasaruki.weebly.com/uploads/1/3/0/4/130489070/jowofiv.pdf
    • http://underlineconnections.com/uploads/1/3/0/2/130270762/weludisezonuwotivup.pdf
    • http://brandywinetrail.com/uploads/1/3/0/4/130476506/xofuvupivo.pdf
    • http://hide-nothing.com/uploads/1/3/0/5/130588513/wenitedasive-dufakagesisagaw.pdf
    • http://ruve.kickfastservice.online/uploads/2020/01/29/bc7d361737a.pdf
    • http://mixijoz.kuhni-msc10.icu/uploads/2020/01/29/37fd5aac38c79d1.pdf
    • http://misssupremepurityqueen.com/uploads/1/3/0/5/130551427/130551427.html#linked+list+in+c+using+class+template

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000166e.bin
81e34670cceead7b1aa20801a76f362818328ed503fb3fe06be82efd7b3543e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x166E 8652 bytes

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