Malicious PDF — malware analysis report

Static analysis result for SHA-256 64bacd6513a08777…

MALICIOUS

PDF

109.0 KB Created: 2021-03-18 05:07:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: b37852925af783fb5f5f627c6c6d5cea SHA-1: b4fa9742afb7f40ebc0e5deb45ebd298a5ad40e7 SHA-256: 64bacd6513a08777090e1bfb1377e847a548522500b69a47141017678ab8870a
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by a ClamAV signature and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. One of the embedded URIs points to 'bologen.ru', which is presented as a search result for a cookbook, likely a lure to disguise malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://bologen.ru/wix?keyword=the+elder+scrolls+the+official+cookbook+pdf PDF link annotation
    • http://astrology-personal.online/vinanisoziloxbm8jy.pdfIn PDF document text
    • https://wezalowesugalu.weebly.com/uploads/1/3/2/8/132815960/54461.pdfIn PDF document text
    • https://vafobuzegigotot.weebly.com/uploads/1/3/0/7/130775214/805f118c2.pdfIn PDF document text
    • https://cdn.sqhk.co/jubawiwa/LjjgjK5/pocket_circuit_racing_yakuza_0_guide.pdfIn PDF document text
    • https://taninuto.weebly.com/uploads/1/3/4/6/134633468/dafefonegilup.pdfIn PDF document text
    • https://zowimebewira.weebly.com/uploads/1/3/1/6/131606727/775806.pdfIn PDF document text
    • http://tramlaweq.online/la_historia_monetaria_de_los_estados_unidos7ko5a.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/lX8hfZb/ballroom_dancing_songs_wedding.pdfIn PDF document text
    • http://alcexpress3.xyz/64456216233mjvfs.pdfIn PDF document text
    • https://cdn.sqhk.co/pasepizut/UNjefjg/spin_the_wheel_fortnite_guns_rarity.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/gijjZn1/japan_auto_spare_parts.pdfIn PDF document text
    • https://naratejog.weebly.com/uploads/1/3/2/6/132682615/vejulafod.pdfIn PDF document text
    • https://cdn.sqhk.co/pinofizulag/d7ICeji/candy_crush_saga_level_6019.pdfIn PDF document text
    • http://copyrightshelpcenter.com/voponagaterixovokobrigpi.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://uploads.strikinglycdn.com/files/43d44aeb-4bb7-43df-a8a2-cc5ecdb15f04/vopeguzebusel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22ddc3ea-eabc-450a-b885-ed0dc140e277/sinetate.pdfIn PDF document text
    • https://06ebba1c-c738-45d4-b58d-83edbdcc9420.filesusr.com/ugd/b14caa_35821068649f4aa9962a77305b3c242d.pdf?index=trueIn PDF document text
    • https://dca540c6-954d-4243-9f09-0921753db957.filesusr.com/ugd/974a4e_ba6a629ef74c4607a70117fbc63fa2a6.pdf?index=trueIn PDF document text
    • https://da18e6a8-d720-42de-a88c-3f13daad7efb.filesusr.com/ugd/08fe48_749f38bb635a4b89a0aebf1f294afbe5.pdf?index=trueIn PDF document text
    • https://b01ec662-dec5-4f54-b977-8708717d6054.filesusr.com/ugd/07e02c_5b64b654ade84140a5a91b4ddaab7e2c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2d7115a-7e42-4cb9-aa09-07007cae2754/80049637466.pdfIn PDF document text
    • https://a19d597f-2220-41b3-9459-688249e8a20b.filesusr.com/ugd/f19f53_3619a12acaf048a089ae80d88100f702.pdf?index=trueIn PDF document text
    • https://b67fa923-03b4-4d21-b555-95ff628d7525.filesusr.com/ugd/1d4b90_594960dd1db34b79bccf689c1aaaa8f2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/548fdd58-a938-416a-adb0-e891f6b08ad8/dudagema.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015ed2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15ED2 5080 bytes
SHA-256: 5b99cb729ab60ffd8a5c9e2efb50e0b704b73c23865604fc30af367586744131
font_01_sfnt_off00017025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17025 12472 bytes
SHA-256: 1d1e043993585d6faafa66ac4dd40a2b02044ea0cf9063de0052f48601dc23b3
font_02_sfnt_off00019860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19860 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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