Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3ee7152bc677369…

MALICIOUS

PDF

36.6 KB Authoring application: pstoedit
MD5: efad440e5090e09cb2b4f274fc1fe65b SHA-1: 7f15e46939f534392f2d1c81461b74321709eb67 SHA-256: b3ee7152bc677369bcefabe932beec558180dbd3155b3d15ec217ada49057adb
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a PDF SEO link farm and ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The ML classifier also assigned a high probability of maliciousness. The document body contains garbled text, but the presence of numerous embedded URLs, many following a similar pattern, strongly suggests a phishing or redirection campaign. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://thepacketpusher.net/uploads/1/3/0/5/130551325/b88151f2597d.pdf
    • http://640stonehouseln.com/uploads/1/3/0/4/130490875/rejodinixajifawe.pdf
    • http://sosdetail.com/uploads/1/3/0/2/130270985/bipezadug.pdf
    • http://cachedistrictliteracy.org/uploads/1/3/0/2/130291531/2035017.pdf
    • http://www.happytrailsdogservice.com/uploads/1/3/0/4/130492771/rusubar.pdf
    • http://thebandbaltimore.com/uploads/1/3/0/7/130775920/4347328.pdf
    • http://greenmarch.co.uk/uploads/1/3/0/4/130489342/vudapujegudofib.pdf
    • http://annualdinner.adcouncil.org/uploads/1/3/0/2/130289774/3235730.pdf
    • http://victimswanted.com/uploads/1/3/0/7/130775015/zuwinov-fegasubojenud.pdf
    • http://www.prolystings.com/uploads/1/3/0/4/130436298/bbf61354.pdf
    • http://rssailing.org.au/uploads/1/3/0/3/130313022/37e7dc5.pdf
    • http://blueegg.net/uploads/1/3/0/7/130776262/tamabobu-ligise.pdf
    • http://truthaboutkifowit.org/uploads/1/3/0/2/130270942/mazifavaz.pdf
    • http://providencedrivingschool.net/uploads/1/3/0/5/130541465/560941.pdf
    • http://andreapsellshomes.com/uploads/1/3/0/4/130478374/4724477.pdf
    • http://host225.carmichaelnl.com/uploads/1/3/0/2/130270899/130270899.html#meaningful+quotes+for+him

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000035c9.bin
0196ad16cfea489e8768938e99811594ca8343fb49d7a5c1e795daeee35d6e03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35C9 7408 bytes

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