Malicious PDF — malware analysis report

Static analysis result for SHA-256 46fa0c1c4234c6af…

MALICIOUS

PDF

40.3 KB Created: 2020-10-04 14:51:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 63e2ac460eef7dbaf1322d272589acd7 SHA-1: eb9fdfd7700cf57ddcd400500f46183bb2f135b7 SHA-256: 46fa0c1c4234c6af81c66a22f24e5908080ac3f86323425f75090a37eb09097f
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of embedded links, many of which point to disposable hosting or are part of a link farm. One critical heuristic identified a link to known malicious redirector infrastructure at https://cctraff.ru/strik?keyword=lfs+s2000+yamas%25C4%25B1+tamindir. This suggests the document's primary purpose is to lure users to malicious sites, potentially for phishing or malware distribution.

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=lfs+s2000+yamas%25C4%25B1+tamindir In PDF document text
    • https://site-1039174.mozfiles.com/files/1039174/bularefuzosigofodipafi.pdfIn PDF document text
    • https://site-1039965.mozfiles.com/files/1039965/tedujekogilulefi.pdfIn PDF document text
    • https://site-1039140.mozfiles.com/files/1039140/49758404910.pdfIn PDF document text
    • http://files.2bendthetrend.com/uploads/1/3/0/7/130775676/6000245.pdfIn PDF document text
    • http://files.ilmnikah.com/uploads/1/3/1/6/131637178/fewugunadazevalonom.pdfIn PDF document text
    • http://bamuwug.diamonddawgbaseball.com/uploads/1/3/1/8/131856080/11898c2764.pdfIn PDF document text
    • http://files.cameronhutchinsonsstory.com/uploads/1/3/0/7/130775309/7213544.pdfIn PDF document text
    • http://files.pack1592.com/uploads/1/3/1/3/131398547/tafekut.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/1/0437/3908/7002/files/timeline_graphic_organizer_maker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/pekuxefojonolurubiniw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9793/9861/files/zeks_air_dryer_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0978/5499/files/gun_mayhem_2_unblocked_games_99.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0099/8305/files/weather_patterns_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/814cf474-ba9b-4b1a-931f-6e4c4251c9cf/47332875882.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4b5c8fc-8f3a-43e1-bea2-ed17f2e3d276/pixogud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e0db2e4-53b1-459c-b624-a05ec7390387/fawatekelov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfd300ed-f7ce-4328-b16f-faced4763fba/fuvugopo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50AA 5372 bytes
SHA-256: 2e45757f7b177c52c551055e7b55855af466fd46c54195f1699a930c4f99982d
font_01_sfnt_off000062e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E3 2504 bytes
SHA-256: bda46a189ab5ca82e9a2dfbdd44eacc5857f8d08cd207523bdafa5b6a969d3e3
font_02_sfnt_off00006dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC6 11716 bytes
SHA-256: 59089ab5362c77ddc3d119e386e1b46ee40bd8fd605046aa9fd6e462789c3e82

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