Malicious PDF — malware analysis report

Static analysis result for SHA-256 7010746b918b0471…

MALICIOUS

PDF

40.8 KB Created: 2020-09-09 00:46:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0f3e89934d5bc8aaa8177f35e68f1f7b SHA-1: 0b6c18cb6c5387b34863e7946b1e776cfd223650 SHA-256: 7010746b918b0471087316f4b2b122789c3524139e0f3187ab04700822355bfc
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://ttraff.com/pify?keyword=excel+bedingte+formatierung+wenn+dann+funktion In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/5ed537_2318d77830c240f59ecb17fb6dfd8ee8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d1fcfc_26a2852729134fc9ad01b6e852e6e5fc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8ba634_95869261d6e749d6ad5c1da2d0774060.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_165ba7408e5c438182cb6fd99e60f9c1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/954c8b_15353a2c7ca8481c97b4d5ed85727f66.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/296484_35a8df165a5b41bcbe95f7319a3f44af.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2b25e8_32f0175397ed4e469bd889d853e77f58.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9729/2967/files/54927612523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8666/7158/files/nuxotapefiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/95492183833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/3633/1419/files/boardwalk_empire_season_5_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0714/7938/files/top_performing_fund_managers_australia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/6173/9419/files/3591188223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/kiwedajesasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3623/7206/files/45766868104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0298/5626/files/58071724444.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_off00005e54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E54 5484 bytes
SHA-256: ab97701cb041a59dd16edfa63bac378754e74c2b656b4548abc9d0f5a04991ef
font_01_sfnt_off00007104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7104 11216 bytes
SHA-256: 485f0f052861221809510f655bd376475eea39ce4490a458a3dfbf1ab8d09faa

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