Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7e8632f6badf718…

MALICIOUS

PDF

33.2 KB Created: 2020-10-07 06:55:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f53b671451fc311c5146c663152800d8 SHA-1: 5555ce0f56cb75113f632356e0fc66a82b92f1fe SHA-256: e7e8632f6badf718f528da667dd91d91f5bcf07b48f13e0e35f5837992694e0a
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector leading to 'https://gettraff.ru/pify?keyword=marvel+one+shot+item+47+full+version'. The document also exhibits characteristics of a link farm, pointing to many other PDF files hosted on various domains. This suggests a campaign to drive traffic to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://gettraff.ru/pify?keyword=marvel+one+shot+item+47+full+version
    • http://files.ryanmecheski.com/uploads/1/3/1/6/131606056/02835fa.pdf
    • http://nolasalin.quietkindfaith.com/uploads/1/3/0/7/130739284/7a80c66979b7.pdf
    • http://gaden.allaynewebster.com/uploads/1/3/1/4/131438096/totejib-vozaxiwobesu-winaseke-dunifazubixibuj.pdf
    • http://files.bemsociety.org/uploads/1/3/0/8/130874472/9473006.pdf
    • https://site-1043562.mozfiles.com/files/1043562/luxisaxomenidimize.pdf
    • https://site-1041200.mozfiles.com/files/1041200/gunedot.pdf
    • http://files.smeccinc.org/uploads/1/3/0/7/130775515/xipemonunevuvoniwolu.pdf
    • http://berime.pugetsounddoodles.com/uploads/1/3/1/4/131437532/9bbade9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0498/1037/4810/files/wuxivapafaweti.pdf
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/restore_-_warehouse_-_manchester_habitat_for_humanity_manchester_nh_03101.pdf
    • https://cdn.shopify.com/s/files/1/0463/0796/7141/files/unfair_sonic_unblocked.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000439b.bin
6462cc460b15f5f34f9b08a82528c39ad2ea17358066470cf0d654e4f9bb0b1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x439B 5240 bytes
font_01_sfnt_off0000555e.bin
57d3ebb8d5b8cf9733ccd55394ad91048dc6f0c84c585efd8a2a836505c53da7
pdf-font-stream PDF embedded font (sfnt) at offset 0x555E 10252 bytes