Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be7d5704a74aacd…

MALICIOUS

PDF

46.8 KB Created: 2020-10-14 18:51:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8d5e0fcb003efe5f2c7b49e41764327c SHA-1: ffc71e969c0efd74a69306a29afafaa4af050659 SHA-256: 1be7d5704a74aacde287a6478536bc8353bfe1b451a017309aaaf59ec8773c90
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ggtraff.ru'. The document body, though heavily obfuscated, contains text related to 'Football manager 2020 liverpool guide' and the malicious URL, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded links to other PDFs, likely for SEO manipulation or to spread malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ggtraff.ru/pify?keyword=football+manager+2020+liverpool+guide In PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/bumumobo.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/kadupe_ripovu_jozovagazemewe.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/5238855.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/selagu-wugixinoxule.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/1/0480/7832/3876/files/schools_in_sierra_leone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6223/1201/files/18604813126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3928/4126/files/67455981197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3277/2757/files/javifev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9685/8520/files/wozinok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5022/8119/files/retail_cover_letter_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8011/4859/files/pathfinder_kingmaker_bestow_grace_of_the_champion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6088/7193/files/crazy_taxi_city_rush_game_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9583/4280/files/worcester_county_registry_of_deeds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3545/8198/files/wi_daycare_licensing_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7125/0333/files/riperepulexufidugurukufud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/21952689127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8989/6626/files/mumevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6693/1865/files/pukosa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e96d2100-91ed-46e3-b588-fd918a251689/tofukawavulitotisalajover.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b62fb5b2-ed6a-4674-8350-8a91cef6226b/gekaxifiwutumitifomawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8929/2184/files/brock_biology_of_microorganisms_13th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3315/0118/files/school_district_54_parent_portal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2644/8023/files/watch_the_pacific_online_free_episode_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8456/9494/files/vonupisudenigumuvoluxok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8701/1221/files/kewusijedajumefigipeven.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_off000075ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75EF 5528 bytes
SHA-256: a82b964865a5d9153946a75b1c264a4163a8bdcabc4b23c33a1174a956237458
font_01_sfnt_off000088a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88A8 10864 bytes
SHA-256: 558139d3e19165477ed74a40038e926e097c679ae0260f8340bbbad22293902b