Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f086aa811adc80…

MALICIOUS

PDF

44.8 KB Created: 2020-10-06 21:23:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 43cc9e388a3456431b825fb1651ea7ba SHA-1: cc9fb3894c3b63ba7fdc21449f1ae6dbf91cbfa7 SHA-256: 07f086aa811adc80bd115c21a700b029f8947c8bc2c40b7fea2e681e11a4bac3
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/strik?keyword=antony+flew+deus+existe+pdf In PDF document text
    • http://jugod.tararogersinterpreter.com/uploads/1/3/1/4/131407995/9972426.pdfIn PDF document text
    • http://files.camerongates.com/uploads/1/3/2/8/132815791/282658.pdfIn PDF document text
    • http://xomup.modularis.co.uk/uploads/1/3/0/8/130813765/norilenoru.pdfIn PDF document text
    • http://files.rtkilgore.com/uploads/1/3/0/7/130776489/7482952.pdfIn PDF document text
    • http://files.communitymovementbuilders.org/uploads/1/3/0/7/130776104/lojamap-kadubumabufotom-negodasurixan-mufuxajewus.pdfIn PDF document text
    • https://site-1042886.mozfiles.com/files/1042886/pemajigakiwevilevuge.pdfIn PDF document text
    • https://site-1039651.mozfiles.com/files/1039651/pelijinopofowobivexodoba.pdfIn PDF document text
    • https://site-1036818.mozfiles.com/files/1036818/xetugufinidanokiguwotibaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1690/3062/files/mtv_pro_guide_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/5670/8770/files/massachusetts_state_flower_images.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5548/3553/files/37300961779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2420/5982/files/patrick_mahomes_parents_home.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3400/4632/files/vimeo_drake_and_josh_movie_job_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5effb41-5369-4c20-8edf-29cf8799efc3/bopeparowumuzakebitikomod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fb8ab11-04c8-46c7-86a6-a40768826202/38593667663.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_off00007183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7183 4980 bytes
SHA-256: d67f05dff25f5fad5c2b13ccb174f06c46998eacf4016bd713b9b2bf97026325
font_01_sfnt_off000082b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B5 10464 bytes
SHA-256: d2b5787d04d51c65f9ff1b932d12438b55961091d5d17db4d330803d33fea1e2

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