Malicious PDF — malware analysis report

Static analysis result for SHA-256 19107f6d203c25be…

MALICIOUS

PDF

48.2 KB Authoring application: QPDF
MD5: a946c4a569079832975d4a22dbb00c8d SHA-1: b5f1269e26767911ed2bd2fdb1ea09c65f401654 SHA-256: 19107f6d203c25be4dc7605c13a36d96256c5b761818ae687a352fcc4bdcc967
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of links to external PDF files, many of which appear to be algorithmically generated. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded links suggest an attempt to redirect users to malicious content, potentially for credential harvesting or further malware deployment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ecobeautyeditor.net/uploads/1/3/0/8/130874082/5b484ffbb0a.pdf
    • http://metdonuts.com/uploads/1/3/0/6/130620975/3307827.pdf
    • http://savinginstead.com/uploads/1/3/0/6/130604962/6ceb5.pdf
    • http://trialhunter.com/uploads/1/3/0/7/130775949/782d9.pdf
    • http://recoverywater.com/uploads/1/3/0/6/130605426/mumejapanemo_junak.pdf
    • http://oddamericancompany.com/uploads/1/3/0/6/130605065/d137012e71ebee.pdf
    • http://leftenglish.ca/uploads/1/3/0/6/130640042/689881.pdf
    • http://jarofthreads.com/uploads/1/3/0/4/130476066/503b7fd.pdf
    • http://themedicalscienceeditor.net/uploads/1/3/0/6/130603798/buwevipis_lodopa.pdf
    • http://junbinow.com/uploads/1/3/0/2/130272586/0d42f.pdf
    • http://bodymindandsport.club/uploads/1/3/0/7/130775048/muxugozi-zitubilu-ruwok.pdf
    • http://coca-pills-drugs.com/uploads/1/3/0/6/130639241/7730425.pdf
    • http://braizbistro.com/uploads/1/3/0/7/130740191/xowilubobadarekidave.pdf
    • http://snowbirdhomemanagementservices.net/uploads/1/3/0/2/130289154/dexexebal.pdf
    • http://emilymullikindesign.com/uploads/1/3/0/4/130489465/supike-bawizonofex.pdf
    • http://shannamcfarlane.com/uploads/1/3/0/6/130639628/3d3499de20.pdf
    • http://smbrandmgt.com/uploads/1/3/0/5/130551418/130551418.html#acidemias+organicas+congenitas

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006008.bin
b2ea01eb132d66a6d27bc5bcb28905ef424d98b309cb3e3cafd8faf4ca71b904		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6008 9200 bytes

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