PDF malware analysis — malicious · 6d0fdb0f49c25cd1

MALICIOUS

PDF

73.9 KB Created: 2021-04-01 17:31:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20

MD5: 0571e652644700a7142d68f13cf8e239 SHA-1: f395bc25696cccd4c167d49521654a8fa8c8690f SHA-256: 6d0fdb0f49c25cd18b8695622deb27d50e64247a60d9c178e38dfd9089b9015a

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or content distribution scheme, potentially leading to further malware downloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://lozipotod.ru/123?utm_term=borland+c+builder+6+developer%2527+s+guide PDF link annotation
- https://jolibudowuw.weebly.com/uploads/1/3/4/5/134596284/mavokuwekimaso-jaterun-jonasatixitog.pdfIn PDF document text
- https://virerulifig.weebly.com/uploads/1/3/1/4/131407283/mavumawesabukizapav.pdfIn PDF document text
- https://cdn.sqhk.co/xenudipu/difYJZt/bekinin.pdfIn PDF document text
- https://cdn.sqhk.co/riwaxagi/ie6W8z8/slime_simulator_cool_math_games.pdfIn PDF document text
- https://cdn.sqhk.co/bebetirifam/kjdgehb/choices_stories_you_play_twitter.pdfIn PDF document text
- https://nerilumasufut.weebly.com/uploads/1/3/1/4/131437044/japosaxatiner-dewumobozelox.pdfIn PDF document text
- https://vimedijo.weebly.com/uploads/1/3/1/6/131606629/638a4b1628d.pdfIn PDF document text
- https://bawimivumo.weebly.com/uploads/1/3/4/6/134609907/7185660.pdfIn PDF document text
- http://wifunejefasod.iblogger.org/88508369685.pdfIn PDF document text
- https://fupelesanu.weebly.com/uploads/1/3/1/6/131606305/dfac90b48.pdfIn PDF document text
- https://cdn.sqhk.co/tupipitijil/F3hchah/australian_defence_apparel_jobs.pdfIn PDF document text
- https://wanezetisozol.weebly.com/uploads/1/3/4/4/134468493/pitotedixuzigit_wewiboxa_baforenevato.pdfIn PDF document text
- http://mulawejotili.iblogger.org/96562252384.pdfIn PDF document text
- https://nanivenom.weebly.com/uploads/1/3/0/9/130969334/lobagagoxaxuloduxu.pdfIn PDF document text
- http://waneboto.66ghz.com/72544278505.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fokogemuzaraw.epizy.com/12141520073.pdfIn PDF document text
- https://s3.amazonaws.com/tevigotu/2880127609.pdfIn PDF document text
- http://kobizesamow.rf.gd/zedir.pdfIn PDF document text
- http://karajifaderiwow.epizy.com/bccm_form_8_example.pdfIn PDF document text
- https://s3.amazonaws.com/pegozegi/carnivore_werewolf_of_london_full_movie.pdfIn PDF document text
- https://s3.amazonaws.com/vidadaviwal/dog_mange_hair_grease.pdfIn PDF document text
- http://xozoput.epizy.com/14994228515.pdfIn PDF document text
- http://zaputizovirifo.rf.gd/union_budget_2020_highlights_upsc.pdfIn PDF document text
- https://s3.amazonaws.com/fikuvine/doxupibedasizufaguwava.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e16a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE16A	5680 bytes
SHA-256: `69186ddf089d82ef841c54bb8204cbed14bec5b7659796834587684b22cca243`
`font_01_sfnt_off0000f4d0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF4D0	10908 bytes
SHA-256: `3887bda65117ff26cf6e597537cf61267f5bc79828fb51faea7e42814da68f8c`

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