Malicious PDF — malware analysis report

Static analysis result for SHA-256 053126ad26b85894…

MALICIOUS

PDF

35.7 KB Created: 2020-06-04 19:40:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c59ec7e99142d63be93fbdb3f5eb129f SHA-1: cf2098b7f152ca8a80aa203638c4f5fc1ae5f149 SHA-256: 053126ad26b85894ef6ea5f5031469004d3a83c21a0947d8d2799b675d66ccd7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links to external PDF files, forming a link farm, and a prominent link suggesting a download for '3d movies gear vr'. The ML classifier strongly indicated maliciousness, and the heuristic firings suggest this PDF is designed to host and distribute other malicious content, likely through its embedded URLs. No scripts were extracted, but the structure and URL patterns are indicative of a phishing or malware distribution scheme.

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://vacationmemories.voyagerwebsites.com/uploads/1/3/1/6/131606025/131606025.html#download+3d+movies+gear+vr
    • http://kbh-rickshaw.dk/uploads/1/3/0/5/130588349/dokavurijilipa-keresuloko-dogegogobe-nanodedabuxoxir.pdf
    • http://likenewelectronic.com/uploads/1/3/0/4/130489051/pabiv-dogemegik-gezogatu-kiruses.pdf
    • http://scottcawthon.net/uploads/1/3/0/6/130639356/rapiporaxetejugenaf.pdf
    • http://gingerscomrades.org/uploads/1/3/0/6/130605244/zeletomifekerexo.pdf
    • http://thehaleyousay.com/uploads/1/3/0/6/130620317/fiboropifa.pdf
    • http://homesbycoronado.com/uploads/1/3/0/6/130639349/tezuwaxutusuziza.pdf
    • http://discusamerica.com/uploads/1/3/1/0/131070452/xokozevelaz-wogovezagazob-gasadexite-rusibizejojizif.pdf
    • http://goodboysonlyclub.com/uploads/1/3/0/2/130289426/razusijigize.pdf
    • http://vacationmemories.voyagerwebsites.com/uploads/1/3/1/6/131606025/terms.html
    • http://vacationmemories.voyagerwebsites.com/uploads/1/3/1/6/131606025/dmca.html
    • http://vacationmemories.voyagerwebsites.com/uploads/1/3/1/6/131606025/policy.html
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://sojobumowoz.files.wordpress.com/2020/06/77807016550.pdf
    • https://relexuxiwa.files.wordpress.com/2020/06/57405241398.pdf
    • https://buviwejurofo.files.wordpress.com/2020/06/gorolonivanav.pdf
    • https://suzofosal.files.wordpress.com/2020/06/50313321358.pdf
    • https://losimabo.files.wordpress.com/2020/06/68542285085.pdf
    • https://pegepev.files.wordpress.com/2020/06/dotorosefipanudojebevi.pdf
    • https://zabofox.files.wordpress.com/2020/06/vazadejanibuporo.pdf
    • https://sikazagoze.files.wordpress.com/2020/06/dosuwidumisexukilaje.pdf
    • https://lagasig.files.wordpress.com/2020/06/91025217464.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062b7.bin
f3a9cc6f43524fc47ab0a028fd2c7ebd8723e044dbd6206f9d16445398ee8da4
pdf-font-stream PDF embedded font (sfnt) at offset 0x62B7 9428 bytes