PDF malware analysis — malicious · f4841f1da7f19a17

MALICIOUS

PDF

73.3 KB Created: 2021-03-21 07:24:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c8fc36f8ef7d9500af6ab4d1ab32a966 SHA-1: ee6a49073ad87a164d078f611ec95caab93fee32 SHA-256: f4841f1da7f19a17da606610459e120a363666e3150201036d9301c31eed9e00

196 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a critical detection for a link farm and a ML classifier indicating high maliciousness. The SE_PAYMENT_REDIRECT_LURE heuristic suggests the document's content is designed to trick users into believing there are new or changed bank instructions, a common tactic in business email compromise scams. The presence of numerous external links, including one pointing to resalured.ru, indicates an attempt to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 6

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.
ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE

Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
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://resalured.ru/123?utm_term=non+functional+requirements+template+example
- https://bamukafigozoxin.weebly.com/uploads/1/3/4/8/134861202/fuvopadigokuse.pdf
- https://funogumoduwe.weebly.com/uploads/1/3/4/3/134309977/9906039.pdf
- https://nifiwaratobiwe.weebly.com/uploads/1/3/5/3/135346776/804560.pdf
- https://xisevulatunetu.weebly.com/uploads/1/3/4/5/134595014/riridetukiri_xazamida_dejiloxo_difuvuju.pdf
- https://zoletewiv.weebly.com/uploads/1/3/2/6/132695336/1bac44072edd5b8.pdf
- https://wupebeziwemipi.weebly.com/uploads/1/3/5/3/135315897/fibeborejasi_takoruxamoz_kubupikore.pdf
- https://besikedu.weebly.com/uploads/1/3/1/8/131871581/vabidegodo-kaguzovufakibe-mabavofilukam-mazikapujexi.pdf
- https://bibevugu.weebly.com/uploads/1/3/1/4/131406802/110742.pdf
- https://cdn.sqhk.co/jojojidatun/hhuibhh/4fun_tv_dance_co_bylo_grane.pdf
- https://jamakebowixon.weebly.com/uploads/1/3/4/4/134477175/4417875.pdf
- https://cdn.sqhk.co/patagarinixa/hiiajis/mr_potato_head_school_rush_game.pdf
- https://cdn.sqhk.co/salobosemiv/oJOAVkF/12506807490.pdf
- https://cdn.sqhk.co/konajera/whfiiOc/busuzunel.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://00407fa8-a9ef-4b78-9bbe-46147fc8acf6.filesusr.com/ugd/5ecadc_1864796080b840c28b89bacbc090559b.pdf?index=true
- https://87d5e434-dc39-4d64-8681-877d64e204d5.filesusr.com/ugd/5660ac_c9648ceab1854eb79db97d7f570112ee.pdf?index=true
- https://s3.amazonaws.com/zafaronivaj/bala_bala_song_housefull.pdf
- https://s3.amazonaws.com/wajufifenoxuj/comprehension_worksheets_for_4th_graders.pdf
- https://s3.amazonaws.com/fovezewi/37151976079.pdf
- https://s3.amazonaws.com/kitakilesa/pisawixikir.pdf
- https://s3.amazonaws.com/xulikamul/alteraciones_cromosomicas.pdf
- https://s3.amazonaws.com/gomaxod/diwifopinimebaxesojak.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e18f.bin` `313d1a68aef28f74d388df765dc1242d43dc8c1f335d66ce96cdfd139f61ceef`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE18F	5324 bytes
`font_01_sfnt_off0000f3ac.bin` `27ded9cebb943a3ee71a4aafb6129347aad82b1b3343790cf213520c711687f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF3AC	10620 bytes

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