Malicious PDF — malware analysis report

Static analysis result for SHA-256 05344016ede97eb7…

MALICIOUS

PDF

47.4 KB Authoring application: Smallpdf Desktop
MD5: 4797d06a95b513caa9a5ac3ad1554a52 SHA-1: b7498df7445636c9a4ee5b4b17fd5100434a0cfd SHA-256: 05344016ede97eb7cb8b463e44f58bd3e07f844f10b0077685a24734e8a83e34
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the nature of the embedded URLs and the heuristic firings point towards a phishing or content distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 https://xevikokesuma.weebly.com/uploads/1/3/0/5/130542859/1c7736587.pdf
    • http://solidinvestmentgroupbvba.com/uploads/1/3/0/6/130605492/7248346.pdf
    • http://gevawi.uykraken.com/uploads/2020/01/27/c83e33.pdf
    • http://wtls.us/uploads/1/3/0/5/130588773/9412091.pdf
    • http://bdaddysgrill.net/uploads/1/3/0/5/130588475/8147871.pdf
    • http://nsanzineza.com/uploads/1/3/0/6/130604841/wimumi.pdf
    • http://course-group.com/uploads/1/3/0/5/130588617/1581113.pdf
    • http://tozili.aavit.pro/uploads/2020/01/27/e3b056122.pdf
    • http://kayleighjbarber.com/uploads/1/3/0/4/130489052/pixezipaxikanek.pdf
    • http://myneosystems.com/uploads/1/3/0/6/130621757/ec75fcd8.pdf
    • http://clspropertymaintenance.com/uploads/1/3/0/5/130590738/8597256.pdf
    • http://rebeccaattia.com/uploads/1/3/0/2/130272613/8162481.pdf
    • https://gatixezojevusox.weebly.com/uploads/1/3/0/5/130541623/693c36c9ee4.pdf
    • http://morozuwu.lierac-paris.ru/uploads/2020/01/29/5813858.pdf
    • http://controlledwatersolutionz.com/uploads/1/3/0/6/130621219/luxiweberexefo.pdf
    • http://xob.migrascope.su/uploads/2020/01/27/nutafuki_foxuxiran_vadalivij.pdf
    • http://run-myweb.com/uploads/2020/01/28/revagudi.pdf
    • http://gosafealarm.com/uploads/1/3/0/2/130289765/7814586.pdf
    • http://chasevelez.com/uploads/1/3/0/6/130621191/2682382.pdf
    • https://petufadede.weebly.com/uploads/1/3/0/3/130313429/tubewalubusuvog.pdf
    • https://disudeta.weebly.com/uploads/1/3/0/4/130476141/0ad9d2af4acc.pdf
    • http://abbascoffeehouse.weebly.com/uploads/1/3/0/5/130589161/3904db88eb8d0.pdf
    • http://kelleycarney.com/uploads/1/3/0/2/130289354/1181490.pdf
    • http://bfhspanabaker.weebly.com/uploads/1/3/0/5/130543483/160e72fae5ce4.pdf
    • http://shardexplorers.com/uploads/1/3/0/6/130639153/130639153.html#acoustics+physics+examples

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000f37.bin
f5b1c55456d13e30518b95b666a2f7313f5a2121145659432e2a086c4aebc88a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF37 7728 bytes

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