Malicious PDF — malware analysis report

Static analysis result for SHA-256 57ebab729881d0e9…

MALICIOUS

PDF

31.3 KB Authoring application: Nitro PDF
MD5: 0434bc8ee02e4426b7e9a8cb72ffc584 SHA-1: ea2c031de51ff4c662b8de5afec20d3d01379c55 SHA-256: 57ebab729881d0e9d0852eeb9d9f9c079c9a0a3fdb2d669428328930a3ecc23d
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, as detected by the PDF_SEO_LINK_FARM heuristic. These links point to other PDF files hosted on various domains, suggesting a link farm designed to lure users into downloading further malicious content. ClamAV also identified this as Pdf.Phishing.TtraffRobotInstall, reinforcing the phishing and download lure nature of this document.

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://buildredstone.com/uploads/1/3/0/4/130476493/rawiwakosa.pdf
    • http://www.poulsborvkent.com/uploads/1/3/0/2/130289638/8e274a8a8.pdf
    • http://katiesopocidrake.com/uploads/1/3/0/7/130740389/242777.pdf
    • http://mx.bergcui.com/uploads/1/3/0/8/130874156/0450ff65ee522ea.pdf
    • http://naturalbeautyterpz.com/uploads/1/3/0/7/130775489/gevifew-rigenimi-wozag.pdf
    • http://www.travelingseed.com/uploads/1/3/0/3/130313495/7857493.pdf
    • http://essentialaffair.com/uploads/1/3/0/6/130604931/965061.pdf
    • http://petfirstpetcare.com/uploads/1/3/0/6/130604806/4652508.pdf
    • http://pursuitofhappiness.live/uploads/1/3/0/5/130551103/413032d0f262.pdf
    • http://newsolutionsit.com/uploads/1/3/0/6/130604449/9354456.pdf
    • http://360killer.com/uploads/1/3/0/4/130483394/kelodatejabuwazoger.pdf
    • http://katievardi.com/uploads/1/3/0/8/130815582/2778098.pdf
    • http://adsl-63-204-18-36.benefitplans.org/uploads/1/3/0/4/130478110/130478110.html#t.vst59.031+datasheet+pdf
    • http://adsl-63-

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000021c5.bin
c4181a2c50da277370b48201d8fa8ba29253969bf3024d73be13c26fbc9e2f29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21C5 8092 bytes

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