Malicious PDF — malware analysis report

Static analysis result for SHA-256 41d7e5c6f6bb9eb2…

MALICIOUS

PDF

64.2 KB Created: 2021-02-20 19:52:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 076ebd7fce00beab4c5874893a02d133 SHA-1: 2d8c390e6c7edab05e351096941e47ad28e4a264 SHA-256: 41d7e5c6f6bb9eb2ef1edbd45165eb16e6f9219c9a28cc17e798b1096f38e08b
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified as a link farm, with the primary URL being a lure for "Schwinn 201 recumbent bike parts". This suggests a phishing or scam attempt to redirect users to malicious websites. While no scripts were explicitly extracted, the PDF structure and the presence of external links are indicative of malicious intent, likely involving the exploitation of PDF vulnerabilities or social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/strik?utm_term=schwinn+201+recumbent+bike+parts
    • https://mulokigapasol.weebly.com/uploads/1/3/1/0/131070847/8086272.pdf
    • https://nalokulomegeze.weebly.com/uploads/1/3/4/7/134758193/nirogonu.pdf
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/7c2d0.pdf
    • https://zisetilu.weebly.com/uploads/1/3/1/3/131382786/1010875.pdf
    • http://cloudplay.xyz/35045906435aqydu.pdf
    • http://tameeniraq.com/61451647102kwg3y.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wutisigila/sakovaruvetokubifamafi.pdf
    • https://s3.amazonaws.com/jasipefulaxiduj/how_to_pay_your_small_business_taxes.pdf
    • https://s3.amazonaws.com/makixibawumebol/16118680915.pdf
    • https://s3.amazonaws.com/pojikovewijeja/the_transactions_contemplated_hereunder.pdf
    • https://s3.amazonaws.com/zodererezuzuxi/zikinekewoxopupikezudo.pdf
    • https://s3.amazonaws.com/zalisujezajaje/9697246989.pdf
    • https://s3.amazonaws.com/mozedijiz/angular_formbuilder_disabled_attribute.pdf
    • https://s3.amazonaws.com/sowirutelevolur/foriraxilofi.pdf
    • https://s3.amazonaws.com/joterige/77690634166.pdf
    • https://s3.amazonaws.com/tadevewuju/rodafax.pdf
    • https://s3.amazonaws.com/xamibebulosaxug/jitterbug_smartphone_user_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3bf.bin
3ea9dc0fe5daeba8b7c1286de8752a991578e51b79301a8010be3d8f06b4997c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3BF 3080 bytes
font_01_sfnt_off0000bec7.bin
b39fd83e706aa7c49590f8f42e6407716ee1eaae585e5c8dcf5e1044fa579da6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEC7 5864 bytes
font_02_sfnt_off0000d2a8.bin
f72b9e26679a5ce265cfc8af390d441381bef0ba453cb86700f57cf28f242da1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A8 9508 bytes

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