Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cd26e727e4220c3…

MALICIOUS

PDF

49.7 KB Created: 2020-03-25 08:16:17 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f4e686d04fc1e4b6c4e7bd456d26ea85 SHA-1: f4a67f0b8c7a877b9858141d2a112efea827de74 SHA-256: 9cd26e727e4220c3370e01d86c7852969001b08e3dd2db8115cfad040249061c
114 Risk Score

Malware Insights

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

This PDF is identified as malicious by an ML classifier and exhibits characteristics of a phishing lure, being image-only with a clickable action. The document body contains numerous external URLs, suggesting a link farm designed to redirect users to potentially malicious content. No scripts were extracted, but the presence of many external links indicates a delivery mechanism focused on user interaction with external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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 49 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://drpatty.net/uploads/1/3/0/3/130324236/130324236.html#sharp+aquos+lc32d44u+service+manual
    • http://euroautoimage.com/uploads/1/3/0/7/130739633/batodonizobutaw_lijepemerom_voxubakoxosu_lepegatoja.pdf
    • http://alalson.info/uploads/1/3/0/6/130605502/wekalel_rojamaduru.pdf
    • http://mytravel.guide/uploads/1/3/0/3/130379145/4011257.pdf
    • http://srconsultingus.com/uploads/1/3/0/9/130969657/zanavowokipedeg_togeza_mipofe.pdf
    • http://civilwarlady.org/uploads/1/3/0/7/130740617/dagubovo.pdf
    • http://knucklesrap.com/uploads/1/3/0/5/130543310/tafoxazuponep-vujimoke.pdf
    • http://cheveuxlakay.us/uploads/1/3/0/6/130622058/rekomoto.pdf
    • http://theradicalarmy.com/uploads/1/3/0/4/130476976/1102153.pdf
    • http://bouncyballcatastrophe.com/uploads/1/3/0/7/130776309/7a9c54626.pdf
    • http://theessentialeshelman.com/uploads/1/3/0/3/130379232/wunod.pdf
    • http://hollandhappyfarm.com/uploads/1/3/0/7/130740258/tubogepawelaka.pdf
    • http://maywilliamscarstorage.com/uploads/1/3/0/6/130605034/5459614.pdf
    • http://trailoflifecowboychurch.org/uploads/1/3/0/4/130435619/nakefubawunafamu.pdf
    • http://jasminelozanointeriors.com/uploads/1/3/0/8/130814591/4127370.pdf
    • http://www.neocaliclay.com/uploads/1/3/0/8/130874066/wopirurifisu.pdf
    • http://homesecurityguys.com/uploads/1/3/0/4/130483519/rewefipifabi.pdf
    • http://treesofbaltimore.com/uploads/1/3/0/7/130775818/jupirikujuzena-misaremukog-meres.pdf
    • http://www.qualityconcretes.com/uploads/1/3/0/4/130435695/venetokesugaw_tetemagesuz_bomaxesu_vanubeboso.pdf
    • http://sonjalanehart.com/uploads/1/3/0/5/130550755/fafananiguwuwu.pdf
    • http://www.yorksoncreekmiddle.com/uploads/1/3/0/4/130435862/3210ce03d4a05.pdf
    • http://silentprotagonistgames.com/uploads/1/3/0/3/130379590/vetozimozez-pudira-sobewijukix.pdf
    • http://eclectichobbyistengineering.com/uploads/1/3/0/5/130552084/toneti.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a411.bin
be3de8329a7a8e9d2b0dda2d8746bdd13a9dcd4062371ffe1ff16dc4a8526cc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA411 5132 bytes

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