Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ac7cfad974eebe1…

MALICIOUS

PDF

193.5 KB Created: 2021-03-09 21:23:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: fa3b58b50a67298ae199b52de61be790 SHA-1: b341939416adaf810cad946c2ba8dbc10e7c3cac SHA-256: 7ac7cfad974eebe1afd790a774abba24bd993ee681bbc84f6eaa6875371bccd6
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to suspicious domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of techniques used to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9933

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 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://dugedepap.ru/award?keyword=carbon+cycle+quiz+pdf PDF link annotation
    • http://pasetbs.xyz/307524488755l8jr.pdfIn PDF document text
    • http://matroskin.space/pijokugoworolikuboblxw7.pdfIn PDF document text
    • http://pannochki-art.com/disney_cruise_lines_openingpy90p.pdfIn PDF document text
    • https://cdn.sqhk.co/mugegiduveb/jdkghii/bingo_bg_ear_drops_nextgen.pdfIn PDF document text
    • https://raguwagoneneza.weebly.com/uploads/1/3/1/3/131384547/6605051.pdfIn PDF document text
    • https://cdn.sqhk.co/jawefujivi/gighdWL/bonetale_fangame_mod_menu.pdfIn PDF document text
    • https://zozumaled.weebly.com/uploads/1/3/1/3/131379894/2212826.pdfIn PDF document text
    • http://berkeciftci.net/17588058049bvt8t.pdfIn PDF document text
    • https://pijawofixogut.weebly.com/uploads/1/3/4/0/134017865/gunopiruwegi-sukitifumo.pdfIn PDF document text
    • http://volosaty100.xyz/gasuxavajanelidabevulsqti.pdfIn PDF document text
    • https://cdn.sqhk.co/duwokarewesu/8Nhejep/vadusasenemasemafulemebej.pdfIn PDF document text
    • http://socialwave.me/day_of_the_dragon_king_book_reporthe8l0.pdfIn PDF document text
    • http://crystal-light33.ru/2003_polaris_sportsman_400_tire_sizecskyb.pdfIn PDF document text
    • https://xosipepimebat.weebly.com/uploads/1/3/2/6/132682768/cafb76bce979277.pdfIn PDF document text
    • https://xebolefijepipol.weebly.com/uploads/1/3/0/7/130739937/xobowu.pdfIn PDF document text
    • https://favaruzikab.weebly.com/uploads/1/3/4/8/134871436/malobur_lusuzukakaf.pdfIn PDF document text
    • https://fewanisip.weebly.com/uploads/1/3/2/7/132712603/c8452.pdfIn PDF document text
    • http://sallehq.xyz/rilibutoxedir185m3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c07b3cb0-7d4a-4e65-9c62-eb3bd0ce3b6b.filesusr.com/ugd/7560d5_9f8a1a11811a4646845d5587709142d9.pdf?index=trueIn PDF document text
    • https://07f52280-50dc-49c2-beec-a2e30bf849d0.filesusr.com/ugd/7b8f90_25eb1bdffba345bdb869eff4ef2dda98.pdf?index=trueIn PDF document text
    • https://6e37e838-c278-4d46-baa9-25b8497af200.filesusr.com/ugd/fbcb80_8e7c3c2d73474b43802c0c43abf9c50a.pdf?index=trueIn PDF document text
    • https://989eff4c-946f-4221-9817-1a8d60f2082d.filesusr.com/ugd/7edf14_fe0d7a9476de4abba276d365482a628f.pdf?index=trueIn PDF document text
    • https://e85625e8-91d5-48c2-95a4-67b7b95d5b39.filesusr.com/ugd/b97a97_2e18ac3ea7394ca89b03a288c31fd6ad.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002aa6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA6B 5296 bytes
SHA-256: 24d9e23272d037f9a6a4d48615e4a60f48191c5e063100d236ae05187a811fa0
font_01_sfnt_off0002bc84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC84 11024 bytes
SHA-256: 6709360dffbc47e918942da81d6d40eb4919661b4e79159a7057eb0b9ebce9d8
font_02_sfnt_off0002e1f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E1F0 16144 bytes
SHA-256: 2a5f1667c2e343500efde63e3dd6a136498333968b1680966ac5eb34589f1174