Malicious PDF — malware analysis report

Static analysis result for SHA-256 848adc3d23cc3ac6…

MALICIOUS

PDF

69.7 KB Created: 2021-03-05 12:05:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0ac4ec2655105c744301acdb34f6a637 SHA-1: 16b32115b1ee8223df5796b7343397980a2adec5 SHA-256: 848adc3d23cc3ac60f9473ed36c744eca64a2a24151485f6a5b818770f82b6f1
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://botokaw.ru/award?keyword=mr.+coffee+replacement+iced+tea+maker+pitcher+bvmc+tp10 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4469850/normal_5fef3be90e0de.pdfIn PDF document text
    • https://fofebufog.weebly.com/uploads/1/3/4/7/134738758/xisevunolefoto-nikeza-tomazudifo-roxegiwijijon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444370/normal_5fe4d5ccdb923.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388050/normal_6005287655034.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459029/normal_5fe40f8eebc1b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369657/normal_5fc7df6b228e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369179/normal_6029e44ebb65b.pdfIn PDF document text
    • https://womarunere.weebly.com/uploads/1/3/4/3/134315700/tasejebifuvudoxo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462093/normal_5ffea4f77c87f.pdfIn PDF document text
    • http://penibibujobufux.iblogger.org/tapegozonomuvibumikaparo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403271/normal_600b56ec6346d.pdfIn PDF document text
    • https://tebozelekunoton.weebly.com/uploads/1/3/1/4/131453588/8037787.pdfIn PDF document text
    • https://kegozogoro.weebly.com/uploads/1/3/4/5/134525602/6065880.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385862/normal_6002a2961d46b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384145/normal_60021d8e5bc3e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e29a9437-b0a5-48a6-9afa-908397ce514a.filesusr.com/ugd/16a9c1_57ae87628d814b45bc8333891b47a4de.pdf?index=trueIn PDF document text
    • https://a68e2ff5-bf17-48e3-82d4-ceb975b85758.filesusr.com/ugd/760101_7454735382d4491c926fa772a03e20b4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/entrepreneurship_class_11.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/lspdfr_callouts_v.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/62762554923.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/subaru_forester_2017_review_consumer_reports.pdfIn PDF document text
    • http://rugogifaruniru.rf.gd/what_does_shagging_mean_in_politics.pdfIn PDF document text
    • https://4f0754e2-f0c4-47db-826b-83042027646c.filesusr.com/ugd/7a11b0_0207279fcb174dd7bd36c86a71d991c0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/college_board_sat_2_answers.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F1 5712 bytes
SHA-256: d6e4ce80911e0c0ae8e45fe241036b63bdce756bb89ff14fce2e243a295d9725
font_01_sfnt_off0000e64f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64F 10168 bytes
SHA-256: f85de1d66facd67684d3ab50a4c74c865f7b7bb454be03835aad898fd3d9ef43