Malicious PDF — malware analysis report

Static analysis result for SHA-256 56148ebaeee39758…

MALICIOUS

PDF

39.0 KB Authoring application: Serif PagePlus
MD5: 2a08257b8da59c98a087f2e694f913c4 SHA-1: 241372f2f28aec66ee63cfda0c0c99e4d0b52e2c SHA-256: 56148ebaeee397586307f618af97f8254c12d61e97a72ba8fa698c92f1ce7f86
152 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 flagged by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV also strongly indicate maliciousness, with ClamAV identifying it as Pdf.Phishing.TtraffRobotInstall. No scripts were extracted from this sample, but the extensive URL distribution suggests a phishing or SEO-based malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://www.techdiplomat.com/uploads/1/3/0/5/130550857/97d0b.pdf
    • http://charlestonvillagehall.co.uk/uploads/1/3/0/8/130815381/pawakuxasomotezaf.pdf
    • http://cgexitmaterials.com/uploads/1/3/0/5/130588153/4645455.pdf
    • http://smokeytrout.com/uploads/1/3/0/5/130589385/wubin.pdf
    • http://teamwhenlambo.com/uploads/1/3/0/5/130551427/mifojalejupe_ruxuwomedus_sovawede.pdf
    • http://bb-lash.com/uploads/1/3/0/7/130776082/dasagaja-fijatorevot-wigovexisu.pdf
    • http://dawnhomesut.com/uploads/1/3/0/5/130589135/3b6120.pdf
    • http://mycompanyblog.com/uploads/1/3/0/2/130289686/4477317.pdf
    • http://speakerboxsupermeet.com/uploads/1/3/0/7/130739491/jamal.pdf
    • http://transformationspersonaltraining.com/uploads/1/3/0/4/130490151/b5b3b94d0.pdf
    • http://rainingtacosfoodtruck.com/uploads/1/3/0/6/130604544/076cd4.pdf
    • http://newindanderyd.com/uploads/1/3/0/7/130775853/8011538.pdf
    • http://miguelcbt.com/uploads/1/3/0/7/130739173/1322119.pdf
    • http://giftedguidance.net/uploads/1/3/0/4/130476204/fevewafarofanoxokuw.pdf
    • http://nftesouthflteachers.com/uploads/1/3/0/2/130287548/kijeku.pdf
    • http://illuminationofself.com/uploads/1/3/0/6/130621965/b87be.pdf
    • http://overthetoprentals.com/uploads/1/3/0/2/130289756/2881458.pdf
    • http://carrollhudders.com/uploads/1/3/0/2/130270953/16222eab.pdf
    • http://collabassist.com/uploads/1/3/0/6/130604305/pifotaba_worusanobolamif_vekaguwiletumu.pdf
    • http://absolutehedgefrankfurt.com/uploads/1/3/0/6/130639516/relutanefa_ximigi.pdf
    • http://nubiangoatskentucky.com/uploads/1/3/0/5/130551630/liwuxalofune-boveteri-piremipamatit.pdf
    • http://bigsoiree.com/uploads/1/3/0/2/130272424/kuzefavetidojosakipo.pdf
    • http://mytherapybox.com/uploads/1/3/0/6/130639511/d3697f2df.pdf
    • http://myhempisbomb.com/uploads/1/3/0/6/130640032/nurulatogukeboxaguf.pdf
    • http://a1666172xstreamtravel.xsideas.com/uploads/1/3/0/7/130740356/130740356.html#hormones+of+the+adrenal+cortex+and+their+functions
    • http://newindanderyd.com/upload

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003670.bin
752a58de0237abf43cbb2f5aeacf5c9bb147f153221aca31fcefed3378690a37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3670 7332 bytes

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