Malicious PDF — malware analysis report

Static analysis result for SHA-256 627d75fe6132cf64…

MALICIOUS

PDF

40.4 KB Created: 2020-10-12 11:44:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 003d1c5255991bc4672efc77796d76c1 SHA-1: 7173bc00c734e031c42b245904b16c800e08ed30 SHA-256: 627d75fe6132cf6412173492d82c2607905e3ac591fa1447c89cb611a83512f1
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://gettraff.ru/pify?keyword=ooze+slim+twist+pen+manual In PDF document text
    • https://site-1038946.mozfiles.com/files/1038946/xikupokozavurikira.pdfIn PDF document text
    • http://mukisa.universalbillers.com/uploads/1/3/1/4/131438572/sugedarokalifiv.pdfIn PDF document text
    • http://files.aslyes.com/uploads/1/3/1/4/131406739/jisarotoxa_katunubokufifax_wufonajoximufuj_bifet.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/1/0477/5057/8332/files/waweno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8619/3844/files/rate_of_an_iodine_clock_reaction_lab_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3011/7526/files/25327965747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1645/2799/files/nogibibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6828/4316/files/apple_child_labor_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1743/9902/files/foot_in_poetry_meter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7873/6803/files/mijitejuvigomasuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/9970/1406/files/me_cubre_con_tu_gracia_oh_dios.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_off00006089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6089 5036 bytes
SHA-256: bf6d198543ac86389abcbe58857748ed20c641d243f0be44d689472f511bc9e7
font_01_sfnt_off000071b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B3 10468 bytes
SHA-256: b552dd43d5b1bc561d8cc1ecb7e63a5b2900ec20da6525377524dfc5aae4f6e8