Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a07e355b6184dcf…

MALICIOUS

PDF

79.5 KB Created: 2021-03-12 11:21:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: eb9584d6be0cd5e03aa8085036328bfd SHA-1: 24959d12ca51f927f7338ad30c7f8b1ade9ffd21 SHA-256: 2a07e355b6184dcf612a1cc27cd15dfb932bdb0359d30c7505893d45ad8d6bff
166 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it contains external URIs and is part of a link farm. The document body, though partially corrupted, suggests a lure related to 'California lifeline application form pdf'. The presence of embedded URLs and the nature of the heuristics strongly suggest an attempt to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/award?keyword=california+lifeline+application+form+pdf PDF link annotation
    • http://jajolamuseku.medianewsonline.com/farewell_to_manzanar_chapter_12_and_13_summary.pdfIn PDF document text
    • http://gugezebaz.mygamesonline.org/376168661.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/ravutijogifuw.pdfIn PDF document text
    • http://rojenugilin.22web.org/kabekunojozabuxogojawej.pdfIn PDF document text
    • http://dronextactical.xyz/jabra_freeway_pricerunnerxcl6q.pdfIn PDF document text
    • http://dreabling.online/ultimate_fishing_simulator_guide_android76ii8.pdfIn PDF document text
    • http://nenegifivujaxu.mypressonline.com/dafurebefid.pdfIn PDF document text
    • http://saleproducts.pro/zamulemehuw8p.pdfIn PDF document text
    • http://dajexori.mypressonline.com/fididilidodadegewejoma.pdfIn PDF document text
    • http://dajexori.mypressonline.com/In macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/009e2d5f-1c43-4f3d-8a3b-231869da23e5/data_warehouse_consulting_companies.pdfIn PDF document text
    • https://ca6b24e6-01cd-4368-a310-1df05077a315.filesusr.com/ugd/11b39a_67f0e527a39842ffa1d939737a863954.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d6c1979-6505-41df-8307-a84fd798d1c7/22129141464.pdfIn PDF document text
    • https://4f65703b-d4c0-4c9c-9e30-73c8cc83ec5d.filesusr.com/ugd/54fa57_c4c42fb07bd14b4b9b9557325746a3dc.pdf?index=trueIn PDF document text
    • https://79d86aa2-23c4-4aa0-a0dc-c16ac59ae55d.filesusr.com/ugd/ecb701_b429c1c867764eb5bf695c539b14604a.pdf?index=trueIn PDF document text
    • https://234d5d8d-19c9-4cab-a884-dd0775662658.filesusr.com/ugd/fb7225_5f192415e8154691bf566e482c4d5402.pdf?index=trueIn PDF document text
    • http://sagavaxedowuviv.epizy.com/windows_cmd_commands_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea944183-4164-4aa8-b220-87946f0c6f7f/garmin_vivofit_jr_2_factory_reset.pdfIn macro / runtime command snippet
    • http://datupawop.epizy.com/jaziwabodinolikur.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3A 5028 bytes
SHA-256: a8f616bc01aaf76e5d0fde1a8396098279dfd15278bdce54e1c74f9980cec0b2
font_01_sfnt_off00010d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D3F 10476 bytes
SHA-256: 863bcc57934805e9621cc3e99099d9cfcecd23297dcbd68d8648a20f580d4546

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