Malicious PDF — malware analysis report

Static analysis result for SHA-256 beb5ac776e5aa37e…

MALICIOUS

PDF

42.7 KB Created: 2020-10-04 08:34:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 3fc5641fe673a1bfb498abb0cab6d357 SHA-1: 7c0f3be54ab59a00a457a8cdfa62d3bdd3bcd8b2 SHA-256: beb5ac776e5aa37e5747f001e207b315433801565cd3c5e8e35de2884fb845f3
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://ggtraff.ru/strik?keyword=john+deere+410d+backhoe+service+manual In PDF document text
    • http://files.706wrestling.com/uploads/1/3/1/8/131856041/punubebik-sasafat-bukav.pdfIn PDF document text
    • http://files.adrianlobo.net/uploads/1/3/0/8/130813934/9333646.pdfIn PDF document text
    • http://files.mabellephoto.net/uploads/1/3/0/8/130813042/4444d2.pdfIn PDF document text
    • http://files.ramseymunicipalpool.com/uploads/1/3/1/3/131380759/405294.pdfIn PDF document text
    • http://xaxafale.terwilligercpa.com/uploads/1/3/1/4/131454696/velidotavexugu.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/1/0428/2518/7491/files/avast_antivirus_pro_license_key_till_2038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3532/0735/files/how_to_unlock_death_stench_layered_armor_mhw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5654/4409/files/zikonawolurajukabifeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6876/6873/files/above_all_lyrics_and_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/50880074573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7839/3762/files/16112139634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8595/7782/files/inference_worksheet_8_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/8047/8620/files/30133961267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7640/6436/files/22754696625.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7169b18-ad4d-4736-afb4-e2a8332d1a83/tesemapi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc9daea1-8835-4ce6-9a83-c924953be40f/ladubolotozo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/286f83ef-4a0b-4d45-b1be-aee44be16c78/3185513006.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6819 5716 bytes
SHA-256: ee98bf842067016c557bf727dce6f92467fe68883af7f54f239742716bffc329
font_01_sfnt_off00007b66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B66 10020 bytes
SHA-256: 0faa444b202fc7f711b94d3db81521ab79cedf741dd2e86253f9dfe86227b2e9

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