Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a3b3e40b4d9ceab…

MALICIOUS

PDF

35.9 KB Authoring application: QPDF
MD5: afc8410bb22c00951b7bfd675005f080 SHA-1: 1146e92eb3c9696aad57cd2ca5769a40cbd9ac37 SHA-256: 6a3b3e40b4d9ceabd56d278dd7ed098944066721e2bcb428c78a0866f21d2c6d
172 Risk Score

Malware Insights

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

This PDF is identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged for being an image-only lure with a click-outward action to a large farm of external PDF links. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious redirection intent. The embedded URLs likely lead to further malicious content or phishing pages.

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 35 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://almostathirdgrader.com/uploads/1/3/0/6/130604841/xevazilikinuj-xoxamifukuleweb-kipawasaboxota.pdf
    • http://audio4n6.com/uploads/1/3/0/6/130604312/40783.pdf
    • http://sinohandicraft.com/uploads/1/3/0/8/130814873/1953111.pdf
    • http://topfortysports.com/uploads/1/3/0/7/130738710/puxenaxevogexe_nalapoka_zujanutijeji_felivadinadix.pdf
    • http://mta-sts.ielts-tutor.com/uploads/1/3/0/7/130775545/kumotapipokulupebo.pdf
    • http://www.apaolomariano.com/uploads/1/3/0/5/130590273/3709333.pdf
    • http://mymmtx.com/uploads/1/3/0/7/130740186/xavifojigewukif.pdf
    • http://techlifeannual.com/uploads/1/3/0/5/130588740/pemarit.pdf
    • http://centralmarketdistrict.org/uploads/1/3/0/5/130588278/guxepilelefoxis.pdf
    • http://beverlybike.org/uploads/1/3/0/4/130477915/tibusuzuxezor.pdf
    • http://2051551albertaltd.com/uploads/1/3/0/5/130551258/negimepotudemurope.pdf
    • http://www.luxlivemykonos.com/uploads/1/3/0/7/130739362/poguvabebik-bodokelape.pdf
    • http://zazabristolcourt.com/uploads/1/3/0/5/130588705/zolisejuwadobe.pdf
    • http://riveroaksvet.preview.pethealthnetworkpro.com/uploads/1/3/0/4/130477192/c78afe5f81218.pdf
    • http://newenglandsunroomrepair.com/uploads/1/3/0/6/130621909/buriga_suwokofale_pobad.pdf
    • http://bastion.co.nz/uploads/1/3/0/8/130873975/nimizizota.pdf
    • http://msgarletts-hancock.com/uploads/1/3/0/5/130588735/130588735.html#agilent+1100+series+autosampler+reference+manual

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000038b3.bin
951a9e4751b70caa47c9657c4e5da5e01c588b54e8231922f6cb5d5ba673458a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x38B3 5048 bytes

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