Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d91a71c8218e26c…

MALICIOUS

PDF

73.0 KB Created: 2021-03-03 23:34:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c55b157d6278d440cf6e41607074ae86 SHA-1: 56c9400c4133eec5d530551b04133dd94abd6397 SHA-256: 6d91a71c8218e26c584d7f4011f4fba555f67e7c4c2bdde4eb935cda548bd93c
256 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://jottigo.ru/award?keyword=bike+route+vs+path PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382003/normal_602eb6ed2c5a3.pdfIn PDF document text
    • https://xananitape.weebly.com/uploads/1/3/4/0/134095977/8615667.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465907/normal_600cc3878511a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485321/normal_600cba82bb717.pdfIn PDF document text
    • http://ital-tess.space/86740854872ylziu.pdfIn PDF document text
    • http://xoziduso.mypressonline.com/panasonic_sd-yd250_review.pdfIn PDF document text
    • https://werafapotavide.weebly.com/uploads/1/3/0/9/130969473/xoditarijubule-lavuzetedaboz-xerixamusuvex-dugetiworuwe.pdfIn PDF document text
    • http://strgb2.ru/97280414712h1li7.pdfIn PDF document text
    • http://vaxiliwu.medianewsonline.com/73523236757.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/eve_online_amarr_starting_guide.pdfIn PDF document text
    • http://wugujub.onlinewebshop.net/sangean_rcr_5_digital_am_fm_clock_radio_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/xolafevotelu.pdfIn PDF document text
    • http://vekamodadon.onlinewebshop.net/casio_5081_set_time.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/does_national_guard_get_paid_more_than_reserves.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/15351337583.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_off0000e277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE277 5048 bytes
SHA-256: 42feb464ca5f8ea86416e9a435829e05e06e503020a9e43020d7d4ef2ebd2ffa
font_01_sfnt_off0000f3a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A7 10476 bytes
SHA-256: ffbab6ba752ddf103c874f9f1cda77fea157152097db700ff6fc4422b8d508f2

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