Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa517a56650d818b…

MALICIOUS

PDF

61.7 KB Authoring application: Pdftk
MD5: 3839c81f48237670a6e9fcf368994550 SHA-1: 31bde7d5951a4ebee5ce618cf034b72ec897109e SHA-256: aa517a56650d818b46530ec1cdee043256d8dba465955d9128c1d0b316d677ae
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious phishing content. The critical PDF_SEO_LINK_FARM heuristic indicates the presence of a large number of external links, with the first identified URL being http://terriguy.com/uploads/1/3/0/6/130621216/56ed688.pdf. This suggests the document's primary purpose is to redirect users to a malicious website, likely for phishing or to serve further malware. No scripts were extracted from this sample.

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://terriguy.com/uploads/1/3/0/6/130621216/56ed688.pdf
    • http://northcoastmineralco.com/uploads/1/3/0/2/130273791/54b52b50b42.pdf
    • http://executiveanalysisllc.com/uploads/1/3/0/6/130639136/6331955.pdf
    • http://leindl-design.com/uploads/1/3/0/7/130776808/124992.pdf
    • http://mothersdaymilers.org/uploads/1/3/0/4/130436282/2ed88a41dd98.pdf
    • http://clogging101.com/uploads/1/3/0/4/130483178/totovili.pdf
    • http://decibel-doo.com/uploads/1/3/0/6/130605216/jemevepolowitipud.pdf
    • http://airporthoppermaynooth.com/uploads/1/3/0/6/130605164/rupusum.pdf
    • http://ninetomatoesmandalas.com/uploads/1/3/0/3/130323707/9086411.pdf
    • http://reneedunbar.com/uploads/1/3/0/2/130291785/tuduwanexikaji-zubunuzozigira-nuwaxekexep.pdf
    • http://myworshipmentor.com/uploads/1/3/0/7/130739043/6835693.pdf
    • http://wildxrace.com/uploads/1/3/0/5/130540592/004dcb594e64e9e.pdf
    • http://internationalmushroom.shop/uploads/1/3/0/4/130483879/dofajedodegevebepiju.pdf
    • http://onemindacademy.org/uploads/1/3/0/6/130621515/dofuxarorurogu.pdf
    • http://gotvapestache.com/uploads/1/3/0/8/130873930/130873930.html#kalabhairava+ashtakam+telugu+songs
    • http://airporthoppermaynooth.com/uploads/1/3/0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a5f.bin
d9e76df54bc8398b3de3c442c44fbf4582e8af7a3454330ac4856fa4de7141d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A5F 7704 bytes

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