PDF malware analysis — malicious · 91378d3f0e781a75

MALICIOUS

PDF

80.5 KB Created: 2021-04-01 12:47:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22

MD5: 04ead93c9c432ac6e03a39e27192da2b SHA-1: 8540c998be57a070fd0c9acb362f1cfffa19f1e2 SHA-256: 91378d3f0e781a7513af00add8c1f99477505832bbe1a62898bdfe421babc68a

186 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. It contains a large number of external links, many pointing to disposable domains and link farms, suggesting a phishing or spam campaign. The presence of 'utm_term=novaform+bed+in+a+box+costco' in one URL indicates a potential lure for commercial products. No scripts were extracted, but the structure strongly suggests a malicious intent to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/123?utm_term=novaform+bed+in+a+box+costco PDF link annotation
- https://cdn.sqhk.co/kivipemo/yUjhOie/kidafodalatariforinoporeb.pdfIn PDF document text
- https://molawakipo.weebly.com/uploads/1/3/1/3/131379716/bodubabubaxogoj_jakufiz_nafetav_xukevusozomag.pdfIn PDF document text
- https://xevejepagog.weebly.com/uploads/1/3/4/6/134688444/efe6d3813926.pdfIn PDF document text
- https://kegipulavuraruz.weebly.com/uploads/1/3/1/1/131163865/xotej-mewekaboxasimu-kugexubisarub.pdfIn PDF document text
- https://pexerewiku.weebly.com/uploads/1/3/5/3/135313352/4050191.pdfIn PDF document text
- https://cdn.sqhk.co/guwaloxipete/gC8lI7v/juzugataxajoxevusot.pdfIn PDF document text
- https://kuwugexikoxol.weebly.com/uploads/1/3/4/7/134718068/ae3d1.pdfIn PDF document text
- https://tazeviguso.weebly.com/uploads/1/3/4/3/134339516/3a90c9c969571.pdfIn PDF document text
- https://mopotiwifatuge.weebly.com/uploads/1/3/0/8/130813373/6925752.pdfIn PDF document text
- http://fobixoleji.22web.org/fm15_tactics_4-2-3-1.pdfIn PDF document text
- https://vesepuzimimewij.weebly.com/uploads/1/3/0/7/130776402/2774412.pdfIn PDF document text
- https://vurerabekude.weebly.com/uploads/1/3/4/4/134493837/nopatakefusimex_bonava_libaromazef_mufepaguline.pdfIn PDF document text
- https://wojumujar.weebly.com/uploads/1/3/5/3/135396772/b573adcb072.pdfIn PDF document text
- https://cdn.sqhk.co/dikulodut/7gdEuik/sim_sports_city_idle_simulator_games.pdfIn PDF document text
- https://lozezuxugi.weebly.com/uploads/1/3/4/0/134016676/3080096.pdfIn PDF document text
- https://cdn.sqhk.co/juvebuzizej/jLXU0JN/f1_car_racing_schedule.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://tokavazeweg.epizy.com/capitolium_font_free.pdfIn PDF document text
- http://weralawubuzeg.epizy.com/53842249680.pdfIn PDF document text
- http://kejiguwudo.epizy.com/livro_de_cantos_liturgicos.pdfIn PDF document text
- http://jurukukixinom.rf.gd/79810334463.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_off0000ebae.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEBAE	5160 bytes
SHA-256: `52a29322a0a387b74299eb5013e322d06e42b50af7fe0e00a785249af7c68926`
`font_01_sfnt_off0000fd2c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD2C	11612 bytes
SHA-256: `f7b969f580f30c5a41b04486beeb9e333701a89517e841c600efb883d195edb3`
`font_02_sfnt_off0001247a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1247A	4324 bytes
SHA-256: `ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230`

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