Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ccd9703154650c4…

MALICIOUS

PDF

86.3 KB Created: 2021-04-02 04:50:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: a3cf739b54449b1c6d951cab6cf38f04 SHA-1: 3f089f8846b51d1000944c4cbebe1232a270213e SHA-256: 0ccd9703154650c464cad89cc9d8839f62fb7ce2a970c3483a8d03136a1a54b1
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF contains numerous embedded URLs, with a high heuristic score indicating it functions as a link farm on disposable hosting, likely to facilitate phishing or malware distribution. The presence of a 'download button' heuristic further supports a malicious intent to trick the user into downloading a payload. ClamAV detection as 'Pdf.Phishing.Trojan' confirms the malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://soxebez.ru/123?utm_term=gulzaar+chhaniwala+filter+shot++pagalworld PDF link annotation
    • http://dobuwiwitevotir.sportsontheweb.net/83771056373.pdfIn PDF document text
    • http://tunulawofu.iblogger.org/crossfit_training_guide_nutrition.pdfIn PDF document text
    • http://fudetigupapafa.22web.org/33580664289.pdfIn PDF document text
    • http://greatmasters.biz/lawewobufidojinolasovalud3ef.pdfIn PDF document text
    • http://negozio50sconto.info/714980107322u9uk.pdfIn PDF document text
    • http://vvd.bar/622490652505bjjb.pdfIn PDF document text
    • http://dewikul.22web.org/428439564.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/c75db4c7-7cc9-4e81-9c89-075c4a2af25a/redarudivosawawo.pdfIn PDF document text
    • https://b8436764-02b3-4471-8711-1e8fed235cf0.filesusr.com/ugd/3b3fbb_70b65e9c907d4feeb2008fa804499efb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/couture_sewing_techniques_by_claire_b._shaeffer.pdfIn PDF document text
    • http://fatufad.rf.gd/chronic_illness_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/defending_jacob_episodes_length.pdfIn PDF document text
    • http://dobategasugano.epizy.com/lg_front_load_washer_drain_pump_making_noise.pdfIn PDF document text
    • https://8569cc17-8b2a-4187-ace0-95b0550b99f0.filesusr.com/ugd/d6eede_18a6c8e6a0334adca4c224401e074d1a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a10d1e9d-1ff9-41fc-a090-f5ad129a2bd4/fire_alarm_keeps_chirping_with_new_battery.pdfIn PDF document text
    • https://229c3593-bb94-4e5d-9b9f-ca3747df48ef.filesusr.com/ugd/145364_5cc403459d4a492dbf37c2349918ac26.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dd1115c-399a-4d3f-8bac-8ffdd4f44ee0/how_to_replace_refrigerator_light_bulb_kenmore.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/126245353.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d797abb3-4f38-4309-9be4-73eb6fc75379/onyx_ezr_with_home_kit.pdfIn PDF document text
    • http://pabotojixupi.atwebpages.com/veni_creator_raniero_cantalamessa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33242fbb-b8b3-44be-8453-c9d766f3afa0/10400092509.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/dejal.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/79198741258.pdfIn PDF document text
    • https://a181bb3e-7445-4f1f-a1cf-b2fe66c13e92.filesusr.com/ugd/91ce54_0ca726bf583b4f1caf460dc4821defee.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f05f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF05F 5592 bytes
SHA-256: 5b02bd280f7ecc144f7aa9340a0bdba35b1f5f6d2e45e12910e542356de90451
font_01_sfnt_off00010382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10382 11284 bytes
SHA-256: ee0a7403f19078527d1e27453f4d10c878c6f78b2483e0bfe54b96b9940bbc38
font_02_sfnt_off00012a32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A32 16116 bytes
SHA-256: acdc7345fd7c724e0f83f99756c334a81566d7f1ced1780f830934d9e28cbf4f
font_03_sfnt_off00013f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F49 2876 bytes
SHA-256: e427f9b98190a1d6cd25c3267d0ef7bad123a1c6b7cb2955260074aa5f473266

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