Malicious PDF — malware analysis report

Static analysis result for SHA-256 db8da76992b8616b…

MALICIOUS

PDF

79.8 KB Created: 2021-03-13 23:39:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 04bc03bdeae2c381eab9be9baac6008b SHA-1: 01b6108c4a56c5942d487f03726070d6feabc8f6 SHA-256: db8da76992b8616b10645d5611f83863f6d048feab9be5038cece4eac10fd899
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, with one prominent URL pointing to zajinet.ru, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier indicate malicious intent, specifically identified as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to redirect users to malicious sites or deliver further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 5

  • 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.
  • 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://zajinet.ru/wix?keyword=calculus+ab+section+1+part+b+answers+2012 PDF link annotation
    • https://jedifubebevaze.weebly.com/uploads/1/3/4/8/134873515/65a500d0d790769.pdfIn PDF document text
    • http://mosquito.codes/fejegewokewopexogunrrm98.pdfIn PDF document text
    • http://qwonder.space/75083086162j7yf3.pdfIn PDF document text
    • https://jonimewogil.weebly.com/uploads/1/3/1/8/131860125/bedatifine-dimijijiwa.pdfIn PDF document text
    • http://idealsit.space/tobonimctps7.pdfIn PDF document text
    • http://pemizirevubel.mywebcommunity.org/xozitatuxi.pdfIn PDF document text
    • https://sexomimafu.weebly.com/uploads/1/3/4/3/134311134/datonile.pdfIn PDF document text
    • https://nonejekorozu.weebly.com/uploads/1/3/4/1/134108542/kisukafobo_vusisurozi.pdfIn PDF document text
    • http://xteenware.online/8646040356huaw8.pdfIn PDF document text
    • http://kmikaerfs.ru/612215148884t33z.pdfIn PDF document text
    • https://ludolukek.weebly.com/uploads/1/3/4/6/134699908/3281286.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/area_of_composite_figures_worksheet_math_aids.pdfIn PDF document text
    • https://27f1a270-5048-4778-87f0-574dfe85248a.filesusr.com/ugd/b7306e_12b12cd20e5f48d997aeb0307cad4c6a.pdf?index=trueIn PDF document text
    • https://694dae7a-2033-4a59-8b06-91ff4eec0774.filesusr.com/ugd/e1d58f_9767b83346d046c895196270e47735fa.pdf?index=trueIn PDF document text
    • https://d848e4b6-662b-4424-a759-963270729452.filesusr.com/ugd/30e015_1a86fb884c6246828ba4996f28666e32.pdf?index=trueIn PDF document text
    • https://2b12d24f-0c9a-4a32-b427-430aba395f0c.filesusr.com/ugd/6cfe90_b98b4d1811ad4769996086b6e5b73ec2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lukepepe/share_chat_app_in_tamil_pc.pdfIn PDF document text
    • http://dovunufesesiz.onlinewebshop.net/zufaviwigunemuxekewu.pdfIn PDF document text
    • http://bamonoxo.onlinewebshop.net/24167170742.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/wisax.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/gimapisapuzukoxomalop.pdfIn PDF document text
    • http://benamow.myartsonline.com/lopirijeku.pdfIn PDF document text
    • http://nakeviw.myartsonline.com/bovumofasixuxutikuta.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/gigofisopogeguteroginagem.pdfIn PDF document text
    • https://ef9935f7-a918-44a1-999f-f1d50a45e4a7.filesusr.com/ugd/b463f2_224146d7456040bd9ca599dacaa06a3f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/is_it_normal_to_feel_pain_when_you_see_someone_get_hurt.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.

FilenameKindSourceSize
font_00_sfnt_off0000f525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF525 5392 bytes
SHA-256: 7d0c2909a2078c07df3d2b6a74ec30349ae6084f8fce82703351e0a89e2088c4
font_01_sfnt_off00010794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10794 11664 bytes
SHA-256: 512288ffed946036e4fca43a59246ac11a9dcc9485a0dd7fbaa79e7ba698221e

Open this report in the interactive analyzer, or submit your own file for analysis.