Malicious PDF — malware analysis report

Static analysis result for SHA-256 49d25130f46fce0b…

MALICIOUS

PDF

77.0 KB Created: 2021-01-06 04:56:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 701f113f5256f642566b9228f31b3fb6 SHA-1: c7a9fc454558bfe4fdd0cbb4a129c5b5152264f7 SHA-256: 49d25130f46fce0b216c56658759676c9c576616c562d6454171c1e6506ef236
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, contains references to 'Google play services' and 'apkpure', indicating a lure to download potentially malicious software. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://trafffi.ru/aws?utm_term=google+play+services+11.+9.+51+apkpure PDF link annotation
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/f18e11675cd7c47.pdfIn PDF document text
    • https://matazesugol.weebly.com/uploads/1/3/4/7/134702103/586677.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459319/normal_5fbed649b4b57.pdfIn PDF document text
    • https://gowewibejeji.weebly.com/uploads/1/3/4/4/134481286/5554821.pdfIn PDF document text
    • https://lobobofu.weebly.com/uploads/1/3/4/6/134680821/3ca3e79.pdfIn PDF document text
    • https://siputewebototab.weebly.com/uploads/1/3/4/4/134480832/573699.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d951002-70dd-4b61-b4c8-ea658daec17b/zakubiwewu.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/11338708839.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28a7dd05-d371-4634-88ed-b3d4920c5161/compare_the_chesapeake_and_new_engla.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/958b8212-e45f-4057-898c-5db46acfd77c/wesosajuget.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/makafajugawubujumet.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/jofetuvirakudisu.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE0 5724 bytes
SHA-256: a009b46cc3662cf92eeb4cf2fe3abb3cd03b553d0581f5b702e8cb667d89e7a2
font_01_sfnt_off0001028f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1028F 10608 bytes
SHA-256: c7d3b2402c158290812c5feeaba94a551fc1830c1a4129554f3198f3bc2cc6e8

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