Malicious PDF — malware analysis report

Static analysis result for SHA-256 f712603f81f98f11…

MALICIOUS

PDF

37.5 KB Authoring application: Adobe PDF Library 9.0
MD5: b677b7d1939ab260155cc0fe532c8a90 SHA-1: d6a2a597778e0e51e430523b85f1b2ea95a16060 SHA-256: f712603f81f98f11538a02e14de07958a5be5e5880852ced80d5c323322f679e
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique commonly used for SEO poisoning or to redirect users to malicious sites. ClamAV identified this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', indicating a phishing or traffic redirection purpose. The ML classifier also strongly flagged this as malicious. The embedded URLs are the primary indicators of malicious activity.

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://naturalperformancerehab.com/uploads/1/3/0/4/130483087/459df3c470a831.pdf
    • http://stampexinternational.com/uploads/1/3/0/7/130775752/92bba21f88497.pdf
    • http://agencia.pilmoza.com/uploads/1/3/0/4/130476069/tuzezakunenu_pajubebutow_vevava_saduvefidutolun.pdf
    • http://greentourgroup.com/uploads/1/3/0/2/130271209/89813e9f5e60a.pdf
    • http://mitchellgribbroek.com/uploads/1/3/0/4/130483808/zufaporakarep.pdf
    • http://venezuelaenergetica.net/uploads/1/3/0/6/130603852/tojipekivipo.pdf
    • http://pump-culture.com/uploads/1/3/0/5/130543941/gatewuzerixopisawuwi.pdf
    • http://epicwatchdeals.net/uploads/1/3/0/4/130476320/dujafi.pdf
    • http://janestorm.website/uploads/1/3/0/6/130604333/rifovejedi_danasar_vasof.pdf
    • http://t7exn.bpmtc.com/uploads/1/3/0/4/130436451/pavalomad.pdf
    • http://cryptkittydesigns.com/uploads/1/3/0/4/130489423/jalavexunubuzo.pdf
    • http://michellekellyjewelry.com/uploads/1/3/0/5/130539734/xujizegulus_lubifirizovana_nevaj.pdf
    • http://autodiscover.digcitinstitute.com/uploads/1/3/0/4/130435654/130435654.html#tumores+glandula+suprarrenal+seram
    • https://medlineplus.gov/spanish/adrenalglandcancer.html

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000039ea.bin
eb16ce5de82576d9af63c9bbd45e470f7642b18f14d7bdd4c1ce61444e451657		 pdf-font-stream PDF embedded font (sfnt) at offset 0x39EA 8628 bytes

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