Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebdeacb83d1d8b1d…

MALICIOUS

PDF

90.6 KB Created: 2021-03-23 01:30:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f035207bbfe3bffa7fd7beafc5018f2 SHA-1: dd80b1bee14a583f434f695be5c710256cc548cb SHA-256: ebdeacb83d1d8b1dc9b9b0d869cbefcc8c8077b7691d0f50ddaaae545cb35f49
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a link farm, with the primary malicious URL being resalured.ru. The ML classifier and ClamAV detection strongly indicate maliciousness, with ClamAV identifying it as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, suggests a lure related to 'topical sermon outline', which is likely a pretext to drive traffic to the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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-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://resalured.ru/strik?utm_term=how+to+make+topical+sermon+outline
    • https://cdn.sqhk.co/vasozaponem/Whjibgc/13493062810.pdf
    • http://visiblawty.com/el_profeta_de_gibran_jalil_gibran_resumendprvn.pdf
    • https://cdn-cms.f-static.net/uploads/4486765/normal_6022a7b1c4d19.pdf
    • http://chelobaka.space/riloxezilibufujota5pya1.pdf
    • http://tehnotop.site/639849674088ppid.pdf
    • https://bixowupe.weebly.com/uploads/1/3/1/4/131409305/5013dfcd.pdf
    • https://cdn.sqhk.co/pagupuxu/X4VjeTo/32757614269.pdf
    • https://cdn-cms.f-static.net/uploads/4390385/normal_60184d9b411a4.pdf
    • https://static.s123-cdn-static.com/uploads/4463279/normal_5ffc16c1354c0.pdf
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5fe8f4a31467d.pdf
    • https://cdn-cms.f-static.net/uploads/4424036/normal_6036c3debedc5.pdf
    • https://cdn.sqhk.co/dojidavos/ilgejhC/island_in_the_sun_lyrics_video.pdf
    • https://cdn.sqhk.co/mazonixun/zjejebN/gamebanjo_deluxe.pdf
    • https://jebapawobukil.weebly.com/uploads/1/3/4/5/134521284/bupodojafu_kimasanilinowis_mevevifokexi_wisixabe.pdf
    • http://nubolats.xyz/gelodmu48d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mesixadelomomo/mathematical_reasoning_questions_with_answers.pdf
    • https://s3.amazonaws.com/dazovosugev/bengali_calendar_1426_app.pdf
    • https://s3.amazonaws.com/mavixu/percy_jackson_and_the_olympians_movie_cast.pdf
    • http://tuvinuragoma.epizy.com/barske_stolice_za_kuhinju_forma_ideale.pdf
    • https://s3.amazonaws.com/suxugipipolazog/wasteland_survival_guide_steam.pdf
    • http://pejonoma.epizy.com/fomupekutewakitololum.pdf
    • https://s3.amazonaws.com/fevobelijogal/zujusaxorojuv.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_off000125dd.bin
54f5d01ce5159667ceac25d6ddc8f0cb05892b506e79dee40953dcb328d4ef6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125DD 5196 bytes
font_01_sfnt_off00013781.bin
14cabb05f09fd8add4d5f04b05d8497e3df3ff47522ea14d793331b5eff6e274		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13781 11456 bytes

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