Malicious PDF — malware analysis report

Static analysis result for SHA-256 855a99b2cbe7e7c9…

MALICIOUS

PDF

45.3 KB Authoring application: SWFTools First seen: 2020-08-25
MD5: c288a4697e02ef67b63513bcece809b4 SHA-1: 466ddaae68a518d1ab118d4d47306c380cd59926 SHA-256: 855a99b2cbe7e7c929f98c5fe97429f107b65c819de6d82eb3f1ed876dc5f12d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. ClamAV detected this file as Pdf.Phishing.TtraffRobotInstall-7605656-0, and an ML classifier assigned a high probability of maliciousness. The document body, though heavily corrupted, contains fragments of URLs that align with the heuristic findings, suggesting a phishing or content distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • 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 https://gazijeligapemob.weebly.com/uploads/1/3/0/5/130542991/fobikelusibotu-rofete-dozujeb.pdf In PDF document text
    • http://myspiritlevel.co.uk/uploads/1/3/0/6/130604984/poxowaki.pdfIn PDF document text
    • http://rp-360.com/uploads/1/3/0/6/130640061/1437907.pdfIn PDF document text
    • http://andrewtdemeo.com/uploads/1/3/0/2/130288448/7d20da3922b2f.pdfIn PDF document text
    • http://michkah.com/uploads/1/3/0/6/130604044/1b3cb.pdfIn PDF document text
    • http://sanfrancisco-interactivehypnotherapy.com/uploads/1/3/0/3/130313836/futubaxa-tubezepa-munigoterudaxi.pdfIn PDF document text
    • http://mpnetwork.com.au/uploads/1/3/0/6/130621382/lowise.pdfIn PDF document text
    • http://northwestfineartstudio.com/uploads/1/3/0/3/130313567/wojojon.pdfIn PDF document text
    • http://prettylittlewaistline.com/uploads/1/3/0/6/130639867/2378ac075df4.pdfIn PDF document text
    • http://solargenius.com.au/uploads/1/3/0/5/130589115/dozekimowufilawezoxa.pdfIn PDF document text
    • https://vigudojifezisi.weebly.com/uploads/1/3/0/5/130589373/3080102.pdfIn PDF document text
    • http://noscopegaming.net/uploads/1/3/0/4/130488169/130488169.html#modern+calligraphy+alphabets+for+beginnersIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1331 8724 bytes
SHA-256: 35b96088421d8022f9d82f5b8438b4505535220fe6777af5af597cdc87198741

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