Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2b05c1ffa6169e6…

MALICIOUS

PDF

44.2 KB Authoring application: LibreOffice Draw First seen: 2020-09-07
MD5: 0f9532e286148aaaa950994ff71f5f2e SHA-1: 950acc737038d0a56f36b0191a26f3f1b11394da SHA-256: a2b05c1ffa6169e63f8e0041909132c158a3ad1f0ff0cacb025290060ec4e749
212 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a critical finding for a link farm containing numerous external PDF links, and ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0. The embedded URLs suggest a phishing or malware distribution campaign. The document body, though partially corrupted, contains references to 'Plague Inc apk mod ios', indicating a potential lure for users seeking game modifications, which is a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://fomotukigem.weebly.com/uploads/1/3/0/5/130551567/bapitapenoxibum-leloxub-pidozibevo-sasafete.pdf.
  • 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://papa.st/uploads/2020/01/28/fudovuz.pdf In PDF document text
    • https://fomotukigem.weebly.com/uploads/1/3/0/5/130551567/bapitapenoxibum-leloxub-pidozibevo-sasafete.pdfIn PDF document text
    • http://dezandrob2018.com/uploads/1/3/0/4/130483426/fatebataz.pdfIn PDF document text
    • http://npccontracting.com/uploads/1/3/0/5/130543840/2533079.pdfIn PDF document text
    • http://tampabayimprovfestival.com/uploads/1/3/0/2/130287503/5789101f257f187.pdfIn PDF document text
    • http://oest.juniortalent.dk/uploads/1/3/0/7/130740175/688aea25ab1.pdfIn PDF document text
    • http://motortainment.com.au/uploads/1/3/0/6/130639647/melidulutus-rilagow-rigapuxa-molemerikexes.pdfIn PDF document text
    • http://pommaw.tech/uploads/2020/01/28/a52d014f6f.pdfIn PDF document text
    • http://giweja.ledseven.ru/uploads/2020/01/28/6b208ff1c923f.pdfIn PDF document text
    • http://minisheepadoodlepuppies.com/uploads/1/3/0/4/130488584/2570988.pdfIn PDF document text
    • http://nuohotel-zh.devsite-1.com/uploads/1/3/0/7/130740097/130740097.html#plague+inc+apk+mod+iosIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CC 8444 bytes
SHA-256: b08637b9ee95198eea38c70ec6d4adc89ad09d39b5c976ff02a2a4e97124b059
font_01_sfnt_off000072ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72AE 1708 bytes
SHA-256: 83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086