Malicious PDF — malware analysis report

Static analysis result for SHA-256 abeddca8aa1fe9d9…

MALICIOUS

PDF

43.9 KB Created: 2020-03-30 11:29:09 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f10ac9b0f41907a630ac26eea64b01b2 SHA-1: e07bd581ac2a77a8e32205c32b825182644f9e7f SHA-256: abeddca8aa1fe9d9625a8ff71f9598d88c8581d49f53219c4e557add8908085e
94 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gather Victim Identity Information T1204 Malicious Link

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body text, though partially corrupted, includes a URL that is also present in the list of external links. This suggests a coordinated effort to direct users to a large collection of linked content, likely for SEO manipulation or to serve as a distribution point for further malicious activities.

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.
  • 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://benkregel.com/uploads/1/3/0/6/130604972/130604972.html#ejemplos+de+palabras+con+sinonimo+y+antonimo
    • http://andrewjbarrett.com/uploads/1/3/1/3/131381787/8055154.pdf
    • http://red115.com/uploads/1/3/0/7/130776587/b27f62adb7a.pdf
    • http://hassleholmsfotoklubb.se/uploads/1/3/1/3/131382590/setobojir_gajorejolamek_fobamogugobaro.pdf
    • http://wareshoals.org/uploads/1/3/0/6/130621502/cdfdb1e.pdf
    • http://livemusicgozo.com/uploads/1/3/0/7/130776644/wagul.pdf
    • http://rewire7.net/uploads/1/3/0/2/130291910/bea83a3ad82.pdf
    • http://yourscope.net/uploads/1/3/0/4/130476423/ribunizilukused.pdf
    • http://debbybolandwatt.net/uploads/1/3/0/2/130272452/puzawawako-dujizaw-bifirimitod.pdf
    • http://northeastwaterdamage.net/uploads/1/3/0/9/130969192/dimasuje.pdf
    • http://emilysfriendsrescue.com/uploads/1/3/0/9/130969636/4953390.pdf
    • http://oteccoachinglive.com/uploads/1/3/0/8/130813496/gubekuliju-lovonekolonetas.pdf
    • http://accountingforprojects.com/uploads/1/3/0/6/130640062/lesusubi.pdf
    • http://dididothat.net/uploads/1/3/0/3/130312985/mijabe_paxezisowa_botejule_lavem.pdf
    • http://northernsalesq.com/uploads/1/3/0/7/130739963/5105283.pdf
    • http://celebrityjade.com/uploads/1/3/0/3/130323437/306947.pdf
    • http://nynaarmstrong.com/uploads/1/3/0/2/130289480/petapaji.pdf
    • http://nedhee.com/uploads/1/3/0/5/130540767/kasonijexododiguro.pdf
    • http://thehallofrecords.info/uploads/1/3/0/8/130874674/basobisiginum_tabawuxe_vebefefidu_movolad.pdf
    • http://sovereignglobalaccountants.com/uploads/1/3/0/6/130605156/1166913.pdf
    • http://utilitycarsunlimited.com/uploads/1/3/0/6/130603819/titipa-repimutag-xuwupuxenebila.pdf
    • http://breathecation.org/uploads/1/3/1/1/131163514/bosekolimis-zotowawax-tumemofunisitil-kuvedid.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_off000080c5.bin
34a54a151eaed1034151928c1135bf44f375155e639b820ed53d2020e504d333
pdf-font-stream PDF embedded font (sfnt) at offset 0x80C5 8468 bytes