Malicious PDF — malware analysis report

Static analysis result for SHA-256 e57df649ee5934a0…

MALICIOUS

PDF

67.8 KB Created: 2020-12-19 17:34:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 01d2812cfa80f783dbe49bb49a76699b SHA-1: daf63425874398773945a114f0e7274a8e4ee26a SHA-256: e57df649ee5934a01b6cf51a654ea768c212e178f0d768f04861e88a14c79247
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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://traffine.ru/aws?utm_term=respect+aretha+franklin+sheet+music+free PDF link annotation
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/8331384.pdfIn PDF document text
    • https://savakorudefipe.weebly.com/uploads/1/3/2/3/132303238/sedirunit-losirutimolu-pisovavosigat-timabolimaw.pdfIn PDF document text
    • https://zazalefofano.weebly.com/uploads/1/3/4/5/134578352/megalidamaxiroruke.pdfIn PDF document text
    • https://kezofufilulo.weebly.com/uploads/1/3/4/4/134488682/veladaraxemelu.pdfIn PDF document text
    • https://dexajuvado.weebly.com/uploads/1/3/4/4/134470202/bowamabol.pdfIn PDF document text
    • https://zuwumepegowivos.weebly.com/uploads/1/3/1/0/131069935/vetuwexirara.pdfIn PDF document text
    • https://dotigima.weebly.com/uploads/1/3/4/4/134404546/90f66.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/widuxade/veledosimijol.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11362403f5353fd96c027/t/5fca083aacaba317346457ad/1607075898459/life_simulator_3_codes_october_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27b65a8793968641242c3/t/5fd1538e0b60eb4f48287f34/1607553936591/velodamizegumu.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/degamusisipovugekukeveta.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc34e1bf9866f3fd2e3a1df/t/5fc6b558bfb90028be37790a/1606858072847/56053745862.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_off0000cc72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC72 5328 bytes
SHA-256: bbd1a756f6cede4117a6e3da1308aec019acaadf36aa6e0267906874f477879f
font_01_sfnt_off0000de6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6A 10592 bytes
SHA-256: 659a1303ab05df72e814b8793cb2fd7ca050cac97e5c68805919765236b6bee1

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