Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a3d06a1f9376c86…

MALICIOUS

PDF

33.2 KB Created: 2020-11-06 00:14:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 994667e3d03f094260bcb209e0a89442 SHA-1: d796c8576ee80b71aa5bef664c9a0b048d83a020 SHA-256: 6a3d06a1f9376c86beee4442c21372af3f1326bfb8650a5e525cf0482807a042
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 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 https://traffking.ru/strik?keyword=the+outsiders+reading+guide+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382973/normal_5fa219a15a40a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369651/normal_5f8f92924602a.pdfIn PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/25f786.pdfIn PDF document text
    • https://fojigexo.weebly.com/uploads/1/3/4/2/134235048/51673110cbdc7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367627/normal_5f8b82d2654c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5f88745df31dc.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/95324e8a-0a3e-4a95-a015-f4ae82f17bd2/step_10_inventory_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/pokemon_red_unblocked_gba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4872959d-53eb-4f68-959f-c7306ab266d9/53224929962.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24230b9c-015c-46fe-a852-58a58d608550/23737292722.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/984ac718-f0da-45eb-88de-feafc11d7c20/guts_full_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4226510-a0c8-4f1a-ac73-03730cdccc86/78884105343.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_off0000465c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x465C 5096 bytes
SHA-256: 547613c20fb07c24ad25dc63a602a9fe89c6fd837676cea380fce2035bb3c64f
font_01_sfnt_off000057b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57B6 9412 bytes
SHA-256: f5d27e68bdcb17d12d95e88ac85d3fc185bc431a84d30af3d6345006e85c7c5a

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