PDF malware analysis — malicious · 1b3c4fda9c61edf1

MALICIOUS

PDF

70.8 KB Created: 2021-03-06 08:40:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20

MD5: 3e76f7af0e64f5afdce28b0fbad1a5db SHA-1: b4ebcc277874bc764d5655691a4fb6b4bb5bcfa6 SHA-256: 1b3c4fda9c61edf1951bf9e44954dd2a34a9bad5f72e9b19336cf3ea69a43634

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or trojan distribution attempt. The document body and embedded URLs suggest a lure related to product searches, directing users to external sites. The presence of numerous links and disposable hosting points to a link farm used for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/123?utm_term=ridgid+air+compressor+pressure+switch+adjustment PDF link annotation
- https://cdn-cms.f-static.net/uploads/4473638/normal_603154e2de1ce.pdfIn PDF document text
- http://nitofotinelip.iblogger.org/dometic_air_conditioning_manual.pdfIn PDF document text
- http://fisareboveda.getenjoyment.net/zapuxozesagorawipi.pdfIn PDF document text
- http://papotupeti.iblogger.org/18002317550.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4478655/normal_604024096369c.pdfIn PDF document text
- https://cdn.sqhk.co/kizofapekeku/jXjcBwU/agar._io_play_online.pdfIn PDF document text
- http://taxevidel.medianewsonline.com/hp_officejet_pro_8620_replacement_model.pdfIn PDF document text
- https://cdn.sqhk.co/xubupigegi/pOgcihU/champions_league_tournament_maker.pdfIn PDF document text
- https://cdn.sqhk.co/suwixowefa/h6EUmkV/best_funny_videos_page_on_instagram.pdfIn PDF document text
- http://wedevaz.sportsontheweb.net/menciona_8_caractersticas_del_modo_de_produccin_feudal.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4451228/normal_5ffc1a0cb5b66.pdfIn PDF document text
- https://cdn.sqhk.co/tukawezezo/igibFha/domino_cloud_dashboard.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426822/normal_600e352257ece.pdfIn PDF document text
- http://warokibujiz.getenjoyment.net/wikojoxaf.pdfIn PDF document text
- https://cdn.sqhk.co/noviraxat/pMjatje/zatedotigenojaso.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
- http://nupusadulawux.epizy.com/sample_ballot_for_barangay_election_2018_form.pdfIn PDF document text
- http://gufobipadu.epizy.com/41366185561.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f2b4e75c-7830-4c8e-bc6f-93a57bf45f59/old_school_runescape_wiki_grand_exchange.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ead5735a-b77d-4822-ba4d-1b7ec3cffde8/how_to_write_a_character_analysis_essay.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/44c2d0b6-5735-402d-b188-460831c01f16/why_is_my_maytag_washer_not_working.pdfIn PDF document text
- http://rujidafedisezu.atwebpages.com/is_percy_jackson_in_the_lost_hero_book.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7e0398fa-f0e5-48f7-b45d-d2974cfff091/79732778008.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c9e7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC9E7	5512 bytes
SHA-256: `f993c5ff8ac76b33667fcadf8314984fe28b3a3e184d715b7c603da17d16a4dc`
`font_01_sfnt_off0000dc94.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC94	10184 bytes
SHA-256: `ec12f8d12de047c452c420650b18bc0626af58255d1ec3a039cdb8ccee67c989`
`font_02_sfnt_off0000ff21.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF21	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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