Malicious PDF — malware analysis report

Static analysis result for SHA-256 322c7c86108df5ea…

MALICIOUS

PDF

33.0 KB Authoring application: PDFedit
MD5: db578315fdb811bc31aacc26ca5d82d3 SHA-1: fb6a7e94dd05ac668c8401250d431f26a772de8c SHA-256: 322c7c86108df5ea922679cdcc0d4b20e186af8fa8d6865e4d2c4c30c30b7bb4
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to PDF files hosted on various domains, which is characteristic of a link farm used for SEO poisoning or phishing. The document body, despite being heavily obfuscated, contains text related to a 'Bosch ascenta washer dryer manual' and includes several URLs that are likely part of this lure. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing and redirection intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://newgaterva.com/uploads/1/3/0/3/130323455/vedatazofujalovituw.pdf
    • http://govexipisi.xelamit.ru/uploads/2020/01/27/7218894.pdf
    • http://premedpursuit.com/uploads/1/3/0/3/130313265/7683392.pdf
    • http://mychoice-thefilm.com/uploads/1/3/0/5/130545742/3264210.pdf
    • http://1957rams.org/uploads/1/3/0/6/130621084/vodazo.pdf
    • http://dropby2day.com/uploads/1/3/0/3/130313155/69058.pdf
    • http://storedesigns.in/uploads/1/3/0/4/130476120/2584064.pdf
    • http://eastcoastspeedwaytv.com/uploads/1/3/0/4/130488338/munopewu.pdf
    • http://alaskacenterforfasd.com/uploads/1/3/0/2/130289279/130289279.html#bosch+ascenta+washer+dryer+manual

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000111f.bin
7653bac7088a79198202bf076fd6638b0a89f1c93c14510e4c5fa964b523d5d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111F 8344 bytes

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