Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab897633a0d256c8…

MALICIOUS

PDF

41.2 KB Created: 2020-10-06 10:09:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 52feaf6c999b3b2f6f3b73f8113f361c SHA-1: 7253ce05c5f9ef8eba9dabb2707923e7f21ef9a9 SHA-256: ab897633a0d256c8813bf84fb6cc45560ce35b2085d631719b23eac59b700ee7
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=cancer+man+jealous In PDF document text
    • https://site-1039570.mozfiles.com/files/1039570/pidibirogifaw.pdfIn PDF document text
    • https://site-1040507.mozfiles.com/files/1040507/kabawowasofexe.pdfIn PDF document text
    • https://site-1043032.mozfiles.com/files/1043032/wujusegijowegovunabipejap.pdfIn PDF document text
    • https://site-1039214.mozfiles.com/files/1039214/tidulekelefosusote.pdfIn PDF document text
    • https://site-1040144.mozfiles.com/files/1040144/jewoxejirefewixok.pdfIn PDF document text
    • http://nigasujup.leighscateringchippenham.co.uk/uploads/1/3/0/9/130969723/2e0ab74fcc.pdfIn PDF document text
    • http://files.sherrysalant.com/uploads/1/3/0/7/130775432/5084172.pdfIn PDF document text
    • http://vawak.illawarraholter.com/uploads/1/3/1/3/131398455/d96ba7626cc9.pdfIn PDF document text
    • http://files.marsjoyofpainting.com/uploads/1/3/1/6/131606127/1986964.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6672b959-a64a-46f6-a6c1-e32503d756cb/raxelov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11a0c183-1d53-42dc-9171-33875f08513c/81109095247.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74401137-2ff6-4bef-9df0-6c9fd96d78d4/51117084305.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abb1502e-e11a-402d-a691-b6fce5e9370a/71107229321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8497/2183/files/dr_robert_waldman_utah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1487/6059/files/company_of_heroes_2_mods_install.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5957/5958/files/71417004326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5979/2022/files/all_of_me_gypsy_jazz_guitar_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/73399229039.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_off0000624c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624C 4928 bytes
SHA-256: 1be9d756cd700397d06f5af9b11c1272e41bd2c0a37298524af58d83b1354f35
font_01_sfnt_off000072ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72EF 11772 bytes
SHA-256: 6f8cf6ef5d88ad305700bb7d514c56631a70002a3acddb93fc563b6a87d41104

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