Malicious PDF — malware analysis report

Static analysis result for SHA-256 172e63c18c7ab138…

MALICIOUS

PDF

44.7 KB Created: 2020-10-08 17:40:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 34ec86d12b1a69204f883c348565bd47 SHA-1: e87dc1d752072954818f68a69ebf58a8e154008d SHA-256: 172e63c18c7ab138570ac69856a13f76841620e6d4c4c4f67c47aeb9d17a3489
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains a URL that matches the malicious redirector. The presence of numerous external PDF links suggests a link farm or SEO poisoning attempt, likely to drive traffic to malicious 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://cctraff.ru/strik?keyword=evaluation+les+debuts+de+l+humanit%25C3%25A9+6eme In PDF document text
    • http://files.caworkingdog.org/uploads/1/3/1/6/131637070/zelesipifi.pdfIn PDF document text
    • http://files.alrajabahrain.org/uploads/1/3/0/9/130969772/5135728.pdfIn PDF document text
    • http://files.alisonvardy.com/uploads/1/3/0/7/130739991/piwum_jopuneb_zevobal_jojesuwawegob.pdfIn PDF document text
    • https://site-1038556.mozfiles.com/files/1038556/tusejivuroxuwodavotuw.pdfIn PDF document text
    • https://site-1040319.mozfiles.com/files/1040319/65708788569.pdfIn PDF document text
    • https://site-1037141.mozfiles.com/files/1037141/rawuzisodum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0492/5043/5228/files/38930694865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6881/2183/files/greater_arcane_elixir_farming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6693/2902/files/46841964288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9127/1586/files/nisovuwigisax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4222/1479/files/77601782726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6624/2710/files/wukizatowabomimamizepum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7746/2937/files/gifted_hands_study_guide.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C54 5304 bytes
SHA-256: b6be5ed1985532717468addf4abdbe3a64c544bbddad741aa877319852824691
font_01_sfnt_off00006ded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DED 12388 bytes
SHA-256: 47d4b1eedd2ecfb4f877264837ac0dde486a6494cdb7a7ec451c5c918f4be504
font_02_sfnt_off00009599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9599 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.