Malicious PDF — malware analysis report

Static analysis result for SHA-256 125666b95340d378…

MALICIOUS

PDF

44.3 KB Authoring application: Solid Converter PDF
MD5: a308f9d6673f104e77e91502c8ba1c97 SHA-1: 4544aeb74936c8f133722a0862c7a7f7a87f088a SHA-256: 125666b95340d378f73d8e9599f3e7f991867740d733b39ab3021d31dea346c7
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high number of external links, many of which point to other PDFs, suggesting a link farm designed to distribute malware. The presence of a 'download button' heuristic further supports a phishing or malware distribution attempt. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' indicates a known phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://logazitutepum.weebly.com/uploads/1/3/0/4/130435659/36ed271fd916.pdf
    • http://nomu.flirtpiraten.fun/uploads/2020/01/27/1145169.pdf
    • http://datinglovers.online/uploads/2020/01/28/7252833.pdf
    • http://xoglamaccess.com/uploads/1/3/0/6/130603798/bibaluzupedigosiguni.pdf
    • http://dippedbytoria.com/uploads/1/3/0/6/130604102/b3669cd9d0cd80.pdf
    • http://vaginaltighteningstickphsupplier.store/uploads/2020/01/29/dobegapukijimigax.pdf
    • http://yincaravana.com/uploads/1/3/0/2/130270991/1a952be44.pdf
    • http://poncaplayhouse.weebly.com/uploads/1/3/0/4/130436399/dujatigi-kukitezes-xudometalike.pdf
    • http://mikewrong.com/uploads/1/3/0/5/130550660/tekim_jalezonanixine.pdf
    • http://themoneylifejuggle.com/uploads/1/3/0/5/130547207/a17baddbc044d9.pdf
    • http://gorir.shopdochoi.tech/uploads/2020/01/27/e0c0c8d331a.pdf
    • http://southernbredpups.com/uploads/1/3/0/6/130604102/rebafavokumasa-dumura.pdf
    • http://nncconjesucristo.com/uploads/1/3/0/6/130639976/kominirovilimefene.pdf
    • http://circlewelder.com/uploads/1/3/0/6/130605168/lurosev.pdf
    • http://abraxasband.net/uploads/1/3/0/4/130489706/7358416.pdf
    • http://kinderdanceswfl.com/uploads/1/3/0/5/130588477/tazoguxob.pdf
    • http://bronxlandlordattorney.com/uploads/1/3/0/3/130379123/4364784.pdf
    • http://bernardobellostudio.com/uploads/1/3/0/6/130621951/130621951.html#tnpsc+awards+and+honours+2017+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000153c.bin
1d75486262caa3c322e5b1a491df1fa88fccade1c4cf91f9855805e32fa50859		 pdf-font-stream PDF embedded font (sfnt) at offset 0x153C 8064 bytes

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