PDF malware analysis — malicious · 1139a727b3b93787

MALICIOUS

PDF

84.6 KB Created: 2021-03-10 08:36:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: a47506b00a9c2a667252ae67540e18b4 SHA-1: eef69c723b0d81428f7a4e1f02043ad2fed5ed30 SHA-256: 1139a727b3b93787b4d5a609b2ea2d6613870241b0b5522a9b680e21935f3462

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URIs, many pointing to disposable domains, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains text related to a 'school supply list template', likely a pretext to disguise the malicious intent of directing users to potentially harmful websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 5

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 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/123?utm_term=school+supply+list+template PDF link annotation
- http://tryraisins.pro/nordictrack_act_pro_pricev56o8.pdfIn PDF document text
- http://keepxufi.space/how_much_does_it_cost_to_reupholster_a_recliner_uk80hsv.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476954/normal_60113559e97af.pdfIn PDF document text
- http://it50discount.pro/five_dialogues_plato_wikiejpbr.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4470222/normal_6007a95cca754.pdfIn PDF document text
- http://groshyk.site/bahubali_song_mp4_tinyjukem9obd.pdfIn PDF document text
- http://helper-badges.com/thyroid_cancer_nice_guidelines14sfp.pdfIn PDF document text
- http://moymagazin.xyz/33967639657pzgt.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4456687/normal_6026e95399a83.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375207/normal_604513445b288.pdfIn PDF document text
- http://koreanluxe.com/61742679716uarkv.pdfIn PDF document text
- http://smirnoff-optic.com/72391521349487cw.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4458848/normal_60224b11bf01c.pdfIn PDF document text
- http://gojuvop.iblogger.org/zukumezakujo.pdfIn PDF document text
- http://begdas.space/17968116943uxk7n.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://zokowaxogo.rf.gd/tom_clancy_jack_ryan_movies_with_harrison_ford.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3dd234af-8987-4410-916c-319be13f379e/98093728820.pdfIn PDF document text
- http://zilapiwet.epizy.com/24502478935.pdfIn PDF document text
- https://s3.amazonaws.com/fisulefajow/xuletijizixigugodubi.pdfIn PDF document text
- https://s3.amazonaws.com/wibadinavosunom/6574898608.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/eb286ad1-4bfa-4f1b-bdd8-0756baadaa39/zuwul.pdfIn PDF document text
- http://sujetokotew.rf.gd/philips_avent_steam_steriliser_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f576f098-61c6-488f-a25a-0ee91df97689/promo_codes_for_dunkin_donuts_december_2020.pdfIn PDF document text
- https://s3.amazonaws.com/zomuzigo/logic_pro_x_manual.pdfIn PDF document text
- https://s3.amazonaws.com/susonanezaj/fluid_resuscitation_nice_guidelines.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_off0000ffdb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFFDB	5060 bytes
SHA-256: `8301d1165cfa30e0e9c604016dcc180a6bad66c206a5964f9a98851d606c8663`
`font_01_sfnt_off00011117.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11117	11144 bytes
SHA-256: `f2dd53fd153ff7046685d6fd030e0a3f74d518b3f71927bed80dc437dc34f088`
`font_02_sfnt_off000136fb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x136FB	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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