Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8ea1c13cba33bce…

MALICIOUS

PDF

42.6 KB Created: 2020-11-05 21:48:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 365e6eb19bfa69da06ffa03e8f4b2301 SHA-1: 2d7e55e50573db7edcb7fef1b28149efd6e9faf2 SHA-256: d8ea1c13cba33bce89165568057859ab4cb66e5614a47af147d197baa5a915ce
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/aws?keyword=manual+for+a+maytag+bravos+xl+mct+dryer PDF link annotation
    • https://jomixemaletid.weebly.com/uploads/1/3/4/6/134659672/ravaxumubarot.pdfIn PDF document text
    • https://vaxedokumam.weebly.com/uploads/1/3/4/2/134266394/xalasir_sajiwede.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/bd1cdc37-fa6b-42ef-95ad-467f68ee97e3/piperug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da9e63a2-5631-4f69-bbe3-e90e2b85054a/dixobagotixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78ea9268-f8df-42d6-ac51-1bb21415d645/change_260_kg_to_lbs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cdf6bec-e6e7-4f8b-84df-dd98f9ec8fb8/16675079170.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/all_in_one_science_class_10_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/smok_i_priv_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/28619154742.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/28120508742.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/just_2_words_level_1245.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/dragon_quest_11_weapon_choice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4584c364-aacb-4912-885f-4416af60c089/79110591200.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58d41ba3-983d-4136-804f-97b2635d3a2b/balancing_redox_reactions_practice_p.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3572a65-ef24-4682-af13-dbd07216728f/vevobox.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_off000066fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FB 5716 bytes
SHA-256: caa352cd12c120cc8ad389a951f70fb42fcf2304006b1aec5595e2cee2f61d26
font_01_sfnt_off00007a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7C 10224 bytes
SHA-256: 4fbad6a71c96b535dc8d3433d097d5a5aeb997644d9c5dd22a5595aa1ee674f9