Malicious PDF — malware analysis report

Static analysis result for SHA-256 49f40925e1aec109…

MALICIOUS

PDF

66.3 KB Created: 2020-10-19 20:53:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: ef6be601c0b661febb463c8d547ac237 SHA-1: dbc851c19f1c37dba4049b2922f711069d13e4a7 SHA-256: 49f40925e1aec1097a5f6763a8eca05a25560878c4298933f2c31db0bed8f7fc
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ttraff.me/123?keyword=remington+597+repair+manual In PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/goxarujemexogu_mosegozivi_fofuwad_kezobal.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/munaziruzaxuw-wowomulurodi.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/desizirazejuk_dofakavupujebix_dujudodude.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/4918653.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/595b3a9104831e.pdfIn PDF document text
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/5607483.pdfIn PDF document text
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/newotuvudog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369764/normal_5f8c022b44508.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368991/normal_5f893ae6a45b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367903/normal_5f876670e5a20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366344/normal_5f87b2fecfe96.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/1/0498/7155/2667/files/77995736007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0541/0471/files/adyashanti_italiano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1673/0799/files/vumimideg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/hercules_game_1997_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1829/7759/files/39486976602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0057/7187/files/the_story_of_an_hour_analysis_symbols.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5978/1023/files/kubovarevoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4682/7694/files/37275162761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7874/5756/files/62954508241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4672/2965/files/menatolexuwulogefajiseja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4a8f2d4-ec4b-4e98-9861-f4d7f4c57079/73525211234.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/610b2a33-2dd0-48ec-81d3-fe473919ed8c/kefuzivonelidamego.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8892f59e-b422-40f9-ab5a-fc2982a1569a/64662780321.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2e2e43e-749b-4bcf-b51a-73ffc26cde40/56648269619.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28ae7207-9c74-41d3-b982-1f4b8b8f6280/54723011904.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_off0000aea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEA9 3784 bytes
SHA-256: 198e73279301d35a9718cf31b9c32996f55eb75980d49d5ca883ec071a7399e5
font_01_sfnt_off0000bc0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC0C 5328 bytes
SHA-256: bdb2c1a930c40c39fcd1de573b4bf52f7785d02da2b33d7a7e612c383f7d9ada
font_02_sfnt_off0000ce25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE25 13936 bytes
SHA-256: fbfba2eb4eca84aa36d81977ea4aedf4f7a768e6c181c909a4b8977a6aed5ee3