Malicious PDF — malware analysis report

Static analysis result for SHA-256 35a9251a76890dc1…

MALICIOUS

PDF

76.5 KB Created: 2021-03-28 11:52:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23bd98af67fca801c49254c97209749a SHA-1: a3cab5051c5bcf428c7a10c0399d06fa353ff791 SHA-256: 35a9251a76890dc19ec87b84e3e4a2c452aded780bb8c3a7ce782ff3650d1bb1
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a search query for educational material, likely a lure to disguise a phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but the presence of an external URI and the overall detection suggest a phishing or credential harvesting attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/wix?keyword=chapter+10+section+1+guided+reading+and+review+the+pressure+to+expand+answers
    • https://cdn-cms.f-static.net/uploads/4423699/normal_60371fc52d3e3.pdf
    • https://lupunudarowujak.weebly.com/uploads/1/3/4/5/134599946/vojini-bufonabulud-reduma-renofewabuw.pdf
    • https://nokajadum.weebly.com/uploads/1/3/4/8/134887388/dorurapa-geleg-vimimowi.pdf
    • https://gumakini.weebly.com/uploads/1/3/1/4/131414358/ca25ff1.pdf
    • https://vajefusuvujob.weebly.com/uploads/1/3/4/4/134464162/439887.pdf
    • http://betmoy56.com/8879419887060lak.pdf
    • https://cdn-cms.f-static.net/uploads/4483365/normal_601336a9ccc68.pdf
    • http://tovarzone.ru/auto_tune_pro_free_pca6pu1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jegezutixaxovu.epizy.com/81480675993.pdf
    • http://xelatisil.rf.gd/gedirimejut.pdf
    • http://wotisonuli.epizy.com/international_stock_market_news_today.pdf
    • https://uploads.strikinglycdn.com/files/6355317c-2338-4b94-a84b-35f55e1ee32e/menof.pdf
    • http://zufagubiles.epizy.com/sekuzule.pdf
    • http://jemorupolubowam.epizy.com/94024572356.pdf
    • https://uploads.strikinglycdn.com/files/4caae9fd-a19a-449f-9fd9-81bcd244b6d3/gobafozagajozejidiraza.pdf
    • https://uploads.strikinglycdn.com/files/561974f2-84d9-4c9e-9295-cf3ac4998d77/netgear_wnr2000_v2_tomato.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.

FilenameKindSourceSize
font_00_sfnt_off0000eb50.bin
2cd55ca4511231275f03c1bfe3bde8ce27675739c74bce1128472a789fbd3eb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB50 5624 bytes
font_01_sfnt_off0000fe7b.bin
cd915d0063d4026352bf8dc37e4fab0ea1ac06c84c740ead915d72d5ec48a9fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7B 11116 bytes

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