Malicious PDF — malware analysis report

Static analysis result for SHA-256 65a4736cdfd7bf98…

MALICIOUS

PDF

86.5 KB Created: 2021-03-09 14:13:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 81aac8c73a016a631ef1f5d687007beb SHA-1: 1e93d3c406df125612c36ffc9f86e2a2afeeb6d1 SHA-256: 65a4736cdfd7bf98f9405a933e53e37b39f69180405a9780a2f384ba66921ecd
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://maypoin.ru/wix?keyword=flagpole+antenna+uk PDF link annotation
    • https://wazalopa.weebly.com/uploads/1/3/0/8/130814586/7630635.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494451/normal_5fe8aabe7bf5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481985/normal_603c7cf26f415.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454304/normal_6026066be48cb.pdfIn PDF document text
    • http://sunakijabe.sportsontheweb.net/zipiwavesikotade.pdfIn PDF document text
    • https://tajafakedebufu.weebly.com/uploads/1/3/1/4/131438499/f0680939cce0.pdfIn PDF document text
    • http://kogemotuju.getenjoyment.net/how_to_make_pink_mixing_colors.pdfIn PDF document text
    • http://naturelofo.mypressonline.com/stihl_battery_hedge_trimmer_reviews.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485161/normal_5fef1374a6582.pdfIn PDF document text
    • https://noxazevoda.weebly.com/uploads/1/3/5/3/135348256/volixasulewuver-punusolejigil-legotujeve-sumajazigolit.pdfIn PDF document text
    • http://lovupijuti.getenjoyment.net/how_to_contact_planet_fitness_corporate.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459776/normal_602299385aeaf.pdfIn PDF document text
    • https://bewotenugajuvu.weebly.com/uploads/1/3/2/6/132695730/kaxirawoduzafirenu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374715/normal_5fdd5f2f78cbf.pdfIn PDF document text
    • https://fejejupusojovif.weebly.com/uploads/1/3/1/4/131483068/mavutoxixedexekez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/nedijowewoded/blender_2._8_sculpting_brushes.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/cleburne_county_ar_sheriff_report.pdfIn PDF document text
    • http://luregaw.onlinewebshop.net/cesarean_section.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/lovesijiginaso.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/6013087954.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/lopedu.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/25973303819.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B79 4564 bytes
SHA-256: 23a4a8cf1422e5a243e12cc384007e5eb4ca60e95ce53c8e43224216ffd071a5
font_01_sfnt_off00011b1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B1A 10456 bytes
SHA-256: b358c0600f5437b3dacc3c8ae55d749c2612a35fac3d71a75154ca01a2b1e9c3
font_02_sfnt_off00013e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E93 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34