Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8c353b765e6b122…

MALICIOUS

PDF

68.7 KB Created: 2021-04-03 09:41:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bee85b611e60534962ac2a3ba9434f3 SHA-1: 77f6622dc4b6436e71ce14a17060526b00290521 SHA-256: b8c353b765e6b122ba9b01726927de90f7ce2bbec8d5ebd6ab4289f1594e35d5
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with the primary ones pointing to suspicious domains like 'ponafet.ru' and 'scienceontheweb.net'. The document body, though heavily obfuscated, suggests a lure related to a recipe book, which is a common tactic for phishing or malware delivery.

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 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://ponafet.ru/strik?utm_term=hamilton+beach+breakfast+burrito+maker+recipe+book
    • http://zozavelomidabi.scienceontheweb.net/hp_elitebook_8560w_drivers.pdf
    • https://cdn.sqhk.co/saguregifu/8mojfap/24290862822.pdf
    • https://cdn.sqhk.co/fujalapevame/OOidljg/hangouts_dialer_2._3_apk.pdf
    • http://bijowuxupolapi.sportsontheweb.net/teledejuxefowizejeva.pdf
    • https://cdn.sqhk.co/geruxibab/EQha8ha/gun_range_lakewood_nj.pdf
    • http://rusewigojubilon.mygamesonline.org/afcat_eligibility_criteria.pdf
    • http://pupigojoniru.mypressonline.com/gapupofozonepik.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://37976aa0-f55f-47d3-847a-8d185b13ebf6.filesusr.com/ugd/1d6212_bb8668c699054eac8a3edb8660381f5c.pdf?index=true
    • https://s3.amazonaws.com/gafedupeba/latidoxanaliwikikedol.pdf
    • http://kagijido.myartsonline.com/34273928809.pdf
    • https://uploads.strikinglycdn.com/files/ae62565b-9832-41e0-b241-e927595ba76c/wabole.pdf
    • https://s3.amazonaws.com/tutapaxi/soundcraft_vi7000_price_in_india.pdf
    • https://uploads.strikinglycdn.com/files/4d283df4-9b11-41a1-8766-1da5a2851f2b/how_to_solve_a_rubiks_cube_beginners_guide.pdf
    • https://s3.amazonaws.com/wolina/nefelamoboxupikijijo.pdf
    • https://23751d96-d7b3-42ca-b8ca-e459b671ea95.filesusr.com/ugd/7de994_2d7a4442f96d45eeb5461f1d042e75c4.pdf?index=true
    • https://58eafb2e-ea74-4523-a1b2-d2e0fe9bfe54.filesusr.com/ugd/466fa0_4c86feb248bf4c7fa4b0efd455395a38.pdf?index=true
    • https://s3.amazonaws.com/gotenukevepunin/how_he_loves_us_chords_kim_walker.pdf
    • https://uploads.strikinglycdn.com/files/aef8e9b9-1d75-4e58-8351-211d1921093d/guitar_songs_tabs_and_chords_for_jingle_bells.pdf
    • https://3e1af3dc-cf37-4f58-935d-0a6065bc5ce9.filesusr.com/ugd/3ca236_e6b259b9d1fc493c83c53ab1983dbf5e.pdf?index=true
    • https://af30af13-e0b7-4de0-aca7-7783c01eade2.filesusr.com/ugd/9757e7_e8cc960906744d868ed83cf73da4cab0.pdf?index=true
    • https://cdfb6f36-dde2-4af5-b3b7-55ff39976061.filesusr.com/ugd/c6ac46_baaf675d5c104042bb204057a514289f.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce33.bin
7b05b5da6cc314298f33949858d43f00b8130cca58e48acc03615c308ffb09e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE33 5420 bytes
font_01_sfnt_off0000e070.bin
ad6d561feaa71a17f1b3f183e67df774fe1b70978d23e811817200f74f8ecf45		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE070 10300 bytes

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