Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade03d21b35561fe…

MALICIOUS

PDF

40.9 KB Authoring application: GIMP
MD5: ba345481f33aec1660fe2aefbf6b4b6e SHA-1: bbcdef65674e4237b88f9d36d41902a7334bf71d SHA-256: ade03d21b35561fe9fcd3d6ec444b7af4c5810910098cfb6802b8cd32f0706c8
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also strongly suggest maliciousness. The primary attack pattern involves redirecting users to a network of linked PDFs, likely for SEO spam or to distribute further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://tanar.lafethome.ru/uploads/2020/01/27/xetomesizogeli.pdf
    • http://leadershipmartialartsacademy.com/uploads/1/3/0/5/130589042/jonolidozi.pdf
    • http://mitchgallagherband.com/uploads/1/3/0/5/130542971/ca6d7cdcb36a.pdf
    • https://guxosavuleg.weebly.com/uploads/1/3/0/4/130492689/4432978.pdf
    • http://chickadeerevisions.com/uploads/1/3/0/5/130539225/1806573.pdf
    • http://vintagegypsysoul.com/uploads/1/3/0/2/130288986/lisarajuvovobowakina.pdf
    • http://petoskeycenter.com/uploads/1/3/0/5/130590195/1ea28cf495.pdf
    • http://nataliekopitzke.com/uploads/1/3/0/5/130588806/rojidageliwidip_jawaburotazigi.pdf
    • https://fukenibimus.weebly.com/uploads/1/3/0/5/130543155/5731663.pdf
    • http://4011sports.com/uploads/1/3/0/5/130588185/9348559.pdf
    • http://nightowlsoulclubs.com/uploads/1/3/0/5/130590257/diluforanepawamod.pdf
    • http://anadiproperty.com/uploads/1/3/0/5/130588603/cf80fc271a6ee7.pdf
    • https://kojaweris.weebly.com/uploads/1/3/0/6/130603961/933730.pdf
    • http://amylographics.com/uploads/1/3/0/3/130313176/xaguxekabaman_vediro_wotemuxizude.pdf
    • http://gewupapelo.hallo-mensen.com/uploads/2020/01/27/736974.pdf
    • http://narowew.my-smile.top/uploads/2020/01/28/42a5424afcd450.pdf
    • http://aligrovue.com/uploads/1/3/0/3/130313345/gupimamuzolu_momunot_vikudaratugif_venajefidebiviw.pdf
    • http://tarezewapa.prontoconsegna.it/uploads/2020/01/29/fafupiguwis_rojinutipika_fuvuf.pdf
    • http://nordcel.com/uploads/1/3/0/5/130590399/fitexeduzivu_pujibejexi_bamigan_vowata.pdf
    • http://designsacredgarden.com/uploads/1/3/0/5/130550966/nelemozepiku.pdf
    • http://waisolutions.com/uploads/1/3/0/2/130274378/daverafuk_jogiluzaza_geperobagegun_nakizumiteperor.pdf
    • http://tivedari.defki.icu/uploads/2020/01/29/poxoxowakiga-bivowadapenekol-jepaxakuxuso.pdf
    • https://mozikado.weebly.com/uploads/1/3/0/3/130323115/maxetujojegelanuli.pdf
    • http://rebeccalaplacaattia.com/uploads/1/3/0/6/130639629/130639629.html#free+letterhead+template+microsoft+word+publisher
    • http://designsacredgarden

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000017b0.bin
7373299a6f29ed9a202777c74e9d8c6716607e7391fb8ce6a853f85586c36b7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17B0 8392 bytes

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