Malicious PDF — malware analysis report

Static analysis result for SHA-256 2362846991a73022…

MALICIOUS

PDF

71.0 KB Created: 2020-10-27 12:16:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ab266608b0650139d98561bce61791ea SHA-1: dda47fd0284d4e35aab69d68c815a370ba0c6cb0 SHA-256: 2362846991a73022066bfbdfdfa3a9d78d119344388e10784e4341695cede7fe
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://ttraff.club/pify?keyword=radha+kripa+kataksha+lyrics+in+english In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/netemevusome-depim.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/batagebexi.pdfIn PDF document text
    • https://xonuvalax.weebly.com/uploads/1/3/1/4/131437330/tapar.pdfIn PDF document text
    • https://lagukekejase.weebly.com/uploads/1/3/0/8/130815031/bigoton-pudonigix-gunimajoxelir-motezuwosaj.pdfIn PDF document text
    • https://wagizubim.weebly.com/uploads/1/3/4/4/134470033/91039.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/puzasi-giwowovejuw-rifomigan-sawupikupamod.pdfIn PDF document text
    • https://mubojage.weebly.com/uploads/1/3/4/3/134377346/pefen_xezoju_fojirapofaza_gunovotenip.pdfIn PDF document text
    • https://zuxuzesis.weebly.com/uploads/1/3/1/4/131438019/ravovewilikidixit.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/fubisi.pdfIn PDF document text
    • https://tedinuvade.weebly.com/uploads/1/3/4/3/134348171/2429565.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wegugus/branches_of_chemistry_with_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/kadirexajejak.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/algebra_formulas_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c58ce52-5e2b-4171-bfcc-0c6438b6f73c/57105077455.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fc7dcf1-26b0-409b-9d4c-eb794c71bf68/11321927445.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a188ee85-fbea-410f-a056-5a95ba131b31/nutrition_through_the_life_cycle_7th.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/245df66a-9daf-4760-8c2e-79ee10f58bf7/44446262355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/0403/8815/files/1293481201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9470/2763/files/satisfaccin_laboral_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7597/4821/files/mewodenifiguz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5032/7451/files/sim_card_holder_details.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/7534/6847/files/real_bike_racing_game_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/assembler_ensemble.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/69787453910.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/kukasovizuzedemevi.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/zobuxag.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000de6b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xDE6B 15096 bytes
SHA-256: 01e4287a26f1898150a4ccd7460fdae239f0f7345151c83e406073cf5284453b
font_00_sfnt_off00009b1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B1F 5508 bytes
SHA-256: 40770a2c3dc647f20cbde9e798d957de1bd593f42a5f4f696e0511ee058fbbd5
font_01_sfnt_off0000add4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADD4 3772 bytes
SHA-256: 0a4742a7d30518e93b516112d6a49ac15dea1c2fdd3760b08880524b17fca9ea
font_02_sfnt_off0000b97a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB97A 11556 bytes
SHA-256: dfa95e056244883969dd757d0df802b9c6dcfc3225af4c33992fe5ef1fdc3b37