Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f9e693910a83b5e…

MALICIOUS

PDF

37.9 KB Authoring application: Mobipocket Creator
MD5: dc1a517612b8bc0ee655332123432fd3 SHA-1: e01e2492c8418c3a357c43cd07828fe5a150da63 SHA-256: 7f9e693910a83b5e83387de03495f5dd09f2a093d6b0da3bbbcec8cc29eadaad
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 URLs pointing to external PDF documents, a technique commonly used for SEO poisoning or to redirect users to malicious content. The heuristic 'PDF_SEO_LINK_FARM' and ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly indicate a phishing or redirection campaign. No scripts were extracted from this sample, but the extensive link farm suggests a delivery mechanism for further malicious payloads or phishing pages.

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://yardsalessource.com/uploads/1/3/0/5/130550901/6965467.pdf
    • http://floattankinfo.com/uploads/1/3/0/5/130551192/9ca73ceda8332.pdf
    • http://www.stevenmcarey.com/uploads/1/3/0/5/130589126/5557108.pdf
    • http://webdisk.traceyfox.co.uk/uploads/1/3/0/9/130969572/9297684.pdf
    • http://fairytaletraders.com/uploads/1/3/0/3/130324270/negizetasuniro.pdf
    • http://hxcoding.com/uploads/1/3/0/4/130475918/4200194.pdf
    • http://www.anklemonitorguard.com/uploads/1/3/0/5/130552055/gikezezumex.pdf
    • http://maxsocialsecurityforlife.com/uploads/1/3/0/6/130621135/1e9f650318d.pdf
    • http://nstuk.com/uploads/1/3/0/2/130270893/2661791.pdf
    • http://www.hawaiigetawayweddings.com/uploads/1/3/0/5/130551325/paleter-zedisubi-xegujoz-sumir.pdf
    • http://michelemoddesign.com/uploads/1/3/0/7/130740077/3683389.pdf
    • http://arvr.nyc/uploads/1/3/0/2/130287211/feripafili_punuvem_bijakakodizisam_madivulosiniluj.pdf
    • http://domesticgoddessish.com/uploads/1/3/0/2/130289550/5892379.pdf
    • http://kidpost.club/uploads/1/3/0/6/130620803/puvawazoxare.pdf
    • http://mozziemotorsports.com/uploads/1/3/0/2/130272101/nelez.pdf
    • http://theporterauthority.com/uploads/1/3/0/4/130476574/pedetixuwujefivoji.pdf
    • http://eclecticquilting.com/uploads/1/3/0/3/130313135/ribolak.pdf
    • http://simixlaundry.com/uploads/1/3/0/8/130873851/wafota.pdf
    • http://camperhand.com/uploads/1/3/0/6/130605263/2773837.pdf
    • http://kazanamaz.net/uploads/1/3/0/4/130483867/rulaj.pdf
    • http://74-123-79-85.mgwnet.com/uploads/1/3/0/2/130287278/130287278.html#list+of+most+common+phrasal+verbs+with+meanings+and+examples+pdf
    • http://maxsocialsecuri

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000341f.bin
df65176a3b32b68b0718e910bd6d2eeeae71b89c6cd692676511735c671d6f92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x341F 8104 bytes

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