Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb6f2003af70cea7…

MALICIOUS

PDF

43.0 KB Created: 2020-10-02 13:10:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3d8846dcdefb9bce6311b26e942ec817 SHA-1: fa813d2d5e83d9421395ff069b12301bba0bd4e3 SHA-256: bb6f2003af70cea751136e3109a945ad8417df9aa08a284e8a3a7c5025dd6d0b
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=dragon+warrior+2+nes+game+genie+codes In PDF document text
    • http://fokox.tokai-guitars.nl/uploads/1/3/1/3/131398234/bijikonalajewezelezu.pdfIn PDF document text
    • http://domuwexu.hambdencc.org/uploads/1/3/1/3/131384516/b877583.pdfIn PDF document text
    • http://gulumud.bath-nh.org/uploads/1/3/1/4/131453329/164095.pdfIn PDF document text
    • http://files.thekingdomiswithin.com/uploads/1/3/2/6/132696104/pevapajekopexo_pobawokuk_robuzaravivizeg_dedowapo.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/1/0429/6291/1391/files/dokaveziwivagiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5591/8487/files/what_is_a_four_term_contingency.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8945/3473/files/happy_birthday_trumpet_images.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8877/5830/files/lojamebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7149/9159/files/pink_rathian_weakness_mh4u.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89c29d54-5b00-4c63-a58e-f1efed0ff34b/vilixowudovofazodeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2818/4215/files/79674257234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/6811/7158/files/coleman_propane_heater_catalytic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4138/8709/files/valid_credit_cards_with_cvv_and_expiration_date.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9852/9191/files/types_of_financial_risks_in_international_business.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3644/0726/files/8888767636.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_off00006788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6788 5448 bytes
SHA-256: 7b40d7e8d9a114852460f23a30b5ae0be1eeee3d7a758efedcd1820371c86a7c
font_01_sfnt_off00007a15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A15 10664 bytes
SHA-256: d9148703cd26476eaaeee65c1da699fcf88fa0fe688ea570404ea80217fd8343

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