Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3997f2ad1f61454…

MALICIOUS

PDF

70.5 KB Created: 2020-11-19 18:09:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 56888c1709f41b8c015341d8a0857325 SHA-1: d77c9f36b121e630a60448d80f194631aafa79ea SHA-256: c3997f2ad1f614545dce8327401a93bab5269cb9ffd9ecb625615b16457407db
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 0.9997

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://traffking.ru/strik?utm_term=ego-+t+manual PDF link annotation
    • https://gegiwozik.weebly.com/uploads/1/3/4/7/134719936/bugipawinigesopa.pdfIn PDF document text
    • https://mubewawabover.weebly.com/uploads/1/3/4/4/134465459/dc9692d81d0.pdfIn PDF document text
    • https://mufisifarugevap.weebly.com/uploads/1/3/4/5/134595961/b7ed72572.pdfIn PDF document text
    • https://xilevaxe.weebly.com/uploads/1/3/4/3/134391777/8463403.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f875327d9787.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393889/normal_5f9165af200fa.pdfIn PDF document text
    • https://tajurasexir.weebly.com/uploads/1/3/1/6/131606020/govodijix_jarelu.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/muvojugejoxip/lencioni_ideal_team_player.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/bill_starr_5x5_exercise_program.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f288182-ac51-4ebc-a6f5-cb39e4415104/5228533969.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/chloroform_vs_dichloromethane_polarity.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/rijazedukav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/026a716c-483f-41ec-89e5-31da7a91b5cd/baddest_guy_ever_liveth_album_zip.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/pesozowejadep.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD987 4720 bytes
SHA-256: b1d517bc96c580196ebc3803fc7d39ac17ea3c024d11b2b1458ccb94b0d63968
font_01_sfnt_off0000e991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE991 10588 bytes
SHA-256: a39326ea9555d49edcbd2c6bddf80c076dcff248c6606831839a06aac8182d30

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