Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dac5db3fcf7aa41…

MALICIOUS

PDF

91.1 KB Created: 2021-03-06 19:50:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 549308e8068053aec60a87a665118c7f SHA-1: dcd1332533ef17ae6a97a0b28e343567b19e41bb SHA-256: 1dac5db3fcf7aa410da67bafff7d595646c84f65b61002e100d60e2e7569c9bd
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/aws?utm_term=the+betrothed+kiera+cass+book+2+release+date PDF link annotation
    • http://kekomoxigidagug.iblogger.org/77774935352.pdfIn PDF document text
    • https://zetakopazo.weebly.com/uploads/1/3/5/3/135351561/reweludefejuraj.pdfIn PDF document text
    • http://ifeelgood.club/bdd_in_action_ebooky279w.pdfIn PDF document text
    • http://creditstar-kabinet.com/tubepawepisizitinudogezof2sfzu.pdfIn PDF document text
    • https://lewuseloti.weebly.com/uploads/1/3/1/4/131437615/03d55377e.pdfIn PDF document text
    • http://likelid.xyz/al_green_songs_love_and_happiness_lyrics9pxsq.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/eiiyhhC/nails_salon_for_sale_in_calgary.pdfIn PDF document text
    • http://upgrade4me.com/galaxy_shooter_2_gamesng6e9.pdfIn PDF document text
    • http://zoguponuwuxoli.medianewsonline.com/cannot_connect_to_my_cloud_dashboard.pdfIn PDF document text
    • https://lomofoxagut.weebly.com/uploads/1/3/4/5/134524577/sopifopot.pdfIn PDF document text
    • https://cdn.sqhk.co/pobijejok/i1pHoHT/wenofamopodube.pdfIn PDF document text
    • https://cdn.sqhk.co/navozaxezini/jhSzTif/the_very_best_of_the_eagles_cd_songs.pdfIn PDF document text
    • http://rerixen.scienceontheweb.net/the_secret_book_and_scone_society_book_2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lozekav.epizy.com/3756444892.pdfIn PDF document text
    • https://f59c0a4d-c104-43ac-8966-a5978cdf1b8c.filesusr.com/ugd/0c1ebd_fbf1b31e36fa4ff391097b48803b3bc4.pdf?index=trueIn PDF document text
    • https://8fc1c2d6-49ba-4d63-8b95-0327ef2b1627.filesusr.com/ugd/1849a1_47fdd4e62a55451880a07a528d714369.pdf?index=trueIn PDF document text
    • https://103360b1-34e0-4ab3-9dc6-c33ea6d96980.filesusr.com/ugd/5ecadc_750d608d816744e48727a7cb4938159c.pdf?index=trueIn PDF document text
    • https://24a70dd4-b549-4b9e-9c0a-6eea45ab85ad.filesusr.com/ugd/ab0c63_4f7b1151dcc74d47853c46696740ae9b.pdf?index=trueIn 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_off0001257d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1257D 5312 bytes
SHA-256: 8390ccc3449325ef68cd73875cb66b1179fd2da0527f49f65e566cdb2695300a
font_01_sfnt_off0001377e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1377E 11232 bytes
SHA-256: c14a6e19afa06e383c5415e2f6fba1a5b0e450587167c0255306bca98601e74b

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