Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cad0a208aaa549e…

MALICIOUS

PDF

67.3 KB Created: 2020-11-22 06:21:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 81092ecaa567893ff07ce8f4775059ca SHA-1: ddc65db553fc3502a90136c0ca0600d6943fe094 SHA-256: 3cad0a208aaa549e243775e1224fab1ec619a96571af661b628cf79cd815b98b
156 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 ClamAV and 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

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffset.ru/123?utm_term=anki+overdrive+starter+kit+used PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420775/normal_5f9b47844cac0.pdfIn PDF document text
    • https://busixixadivuteg.weebly.com/uploads/1/3/4/7/134709325/8010428.pdfIn PDF document text
    • https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/5477161.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://s3.amazonaws.com/suzixegazunow/29303921583.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5b248b3-6663-471b-943f-19de514b526c/jobarufupejulutuzexokar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50c5f626-f32d-4a92-9e60-74f91ec258fe/guvud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e595fc7e-66e6-45b6-aa6c-c3fce4523b15/sejasamaxakumuze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d811213-b560-41de-b3a0-a90233f07cbf/nitalaxizaja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60eb92fe-463c-4d98-8129-11ad92fd7f15/hatasz_dnme_sanat.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/favagozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f54a785b-63ae-4411-9a76-d8914cfca465/66653735364.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f1d3b8d-0280-42c9-be10-7587a13b495f/potato_soup_mix_from_ocharleys.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1dc9992-1487-4206-8f43-cd38356f60a6/26874148714.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 6

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_off0000bcba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCBA 4780 bytes
SHA-256: fefb382c311d657be055792fd26cad61aad409939cc7815255e0ca497bb8a1a8
font_01_sfnt_off0000cd05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD05 11032 bytes
SHA-256: 15c50da5e9f1c3d06a5a66aa065e35f3ca9d89150d7144c14f2ab52b84535e04
font_02_sfnt_off0000f280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF280 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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