Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3a06826dc76cf81…

MALICIOUS

PDF

43.3 KB Authoring application: GIMP First seen: 2020-09-24
MD5: 887df19e89f5f3e871ebabf981518376 SHA-1: a43eefea1d1be9fa5a67c8741147d5b43437f6f3 SHA-256: a3a06826dc76cf816ee0e73fe38bad7f231acc7b728b5765d215f4b28b549501
192 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which strongly suggests a phishing or SEO poisoning attack. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports this assessment. The embedded URLs are likely used to redirect users to malicious websites or to distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://onefriend24.com/uploads/1/3/0/7/130739192/9611012.pdf In PDF document text
    • http://thinmintteatox.com/uploads/1/3/0/2/130292148/xuvene.pdfIn PDF document text
    • http://brainstemtumorlady.com/uploads/1/3/0/7/130739170/f06e7da5a5f62ae.pdfIn PDF document text
    • http://lucagresh.com/uploads/1/3/0/6/130605476/nesavakej.pdfIn PDF document text
    • http://professionalrenovationsofhamptonroads.com/uploads/1/3/0/7/130774999/943dc8751b5e.pdfIn PDF document text
    • http://www.plxelectric.com/uploads/1/3/0/6/130620902/843c849ec0.pdfIn PDF document text
    • http://balmonline.com/uploads/1/3/0/4/130476263/02e6552ce168.pdfIn PDF document text
    • http://hhhcounseling.com/uploads/1/3/0/8/130814711/1973060.pdfIn PDF document text
    • http://renova-skin.com/uploads/1/3/0/7/130775357/7566227.pdfIn PDF document text
    • http://rampantgames.net/uploads/1/3/0/6/130639459/xomawurubem-pibol-dowokizulorow.pdfIn PDF document text
    • http://www.jjuliusenterprises.com.au/uploads/1/3/0/5/130546432/jufilobimubavefos.pdfIn PDF document text
    • http://roadshowarchitects.com/uploads/1/3/0/5/130541073/130541073.html#acetic+acid+and+phenolphthalein+reactionIn PDF document text

Related samples 7

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_off000035a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35A8 8676 bytes
SHA-256: ed33de20e6042660832ca050f236ad4e11d90508bd260584c8b31299750f540f

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