PDF malware analysis — malicious · a9d9e92a2266f5cc

MALICIOUS

PDF

78.8 KB Created: 2021-03-25 08:23:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07

MD5: c44b60a76c299db5c70b1f42200b09fd SHA-1: 13e46255cb29381c239550f2dc364043e50d5056 SHA-256: a9d9e92a2266f5cc86385bbdc68333761c2c55d15ed1ed84c8b5fb13e907be77

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, with a primary focus on directing users to `https://fokemale.ru/123?utm_term=analytical+reasoning+test+with+answers`, disguised as an analytical reasoning test. The heuristic `PDF_SEO_DISPOSABLE_LINK_FARM` further suggests a pattern of using disposable hosting for link farms, reinforcing the phishing or malware distribution objective.

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://fokemale.ru/123?utm_term=analytical+reasoning+test+with+answers PDF link annotation
- https://cdn.sqhk.co/zubejavaxuvu/f7Ogigg/wubatogeluxiwubosuxesurex.pdfIn PDF document text
- http://fifuxuzod.iblogger.org/13092420498.pdfIn PDF document text
- http://bokugoso.22web.org/hit_the_road_jack_piano_sheet_easy.pdfIn PDF document text
- https://cdn.sqhk.co/wujamufaw/d4wihMt/reckless_racing_3_mod_apk_android_1.pdfIn PDF document text
- http://vesimawamom.66ghz.com/brawl_stars_apk_ios_2019.pdfIn PDF document text
- https://cdn.sqhk.co/xawesani/jf2jjgf/julokadipebekumikudoror.pdfIn PDF document text
- https://cdn.sqhk.co/tiwumixe/ijjftZq/65868556192.pdfIn PDF document text
- https://cdn.sqhk.co/pevukoza/kugfghD/46605510257.pdfIn PDF document text
- https://cdn.sqhk.co/sobexofap/SicicRc/debepesukipewemufetevele.pdfIn PDF document text
- http://pomirkapa.site/nuralufugudvk0m.pdfIn PDF document text
- http://mebelintera.ru/nopeliratih0ba.pdfIn PDF document text
- http://natikolom.site/julius_caesar_play_cassius_quotesqdukl.pdfIn PDF document text
- http://nowtorrentz.com/anterior_guided_growth_appliancecdo0z.pdfIn PDF document text
- https://cdn.sqhk.co/fosapuzisas/aLgceha/duvevosufuz.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://pigimefupe.epizy.com/futozodapavebasi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c6846045-97ba-4532-aee2-771974e9c508/werewolf_dnd_5e_race.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/92335e58-340d-460a-a56b-d696ef6cd099/harry_potter_book_8_fanfiction.pdfIn PDF document text
- http://femixuduj.rf.gd/odia_film_bhajan.pdfIn PDF document text
- http://xulifaxamozis.epizy.com/centralization_definition.pdfIn PDF document text
- http://kavejanunar.epizy.com/puxujulisefup.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0057d11d-93cb-4885-b0cc-76ff38ef822b/fixubaxusawigesumoniwa.pdfIn PDF document text
- http://rasupaxuxogip.epizy.com/how_to_drag_sort_pivot_table.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cb2c84b3-323c-4442-a5ff-a3b5c718a85f/learn_python_crash_course.pdfIn PDF document text
- http://sarovagovoz.rf.gd/65318685008.pdfIn PDF document text
- http://zajepatexesa.epizy.com/free_hershey_candy_bar_wrapper_template_word.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_off0000e967.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE967	5032 bytes
SHA-256: `b6c47a7704713a0c991ce538d06c25297393addde7421c21268c49bfc258cea9`
`font_01_sfnt_off0000fa84.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA84	10784 bytes
SHA-256: `f1ffb8d3a574b6d5cecfbcfbd3db2655a115b7061cb2d906c664ec231ac06cf8`
`font_02_sfnt_off00011f4a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F4A	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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