Malicious PDF — malware analysis report

Static analysis result for SHA-256 00540eae32baacfb…

MALICIOUS

PDF

43.2 KB Created: 2020-10-02 22:14:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5d447521bc5454f8dadc2313260c2c2c SHA-1: 229416a0e29ffeb182e51ea65de63ea541b370a4 SHA-256: 00540eae32baacfbf4fe952c8a281d351dff35913bc1768e7815ef20b4d53a98
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.club/pify?keyword=frigidaire+refrigerator+water+dispenser+not+working In PDF document text
    • http://files.cabosuvrentals.com/uploads/1/3/0/7/130739776/sujisa.pdfIn PDF document text
    • http://files.pondviewfarmmaine.com/uploads/1/3/0/9/130969053/pojinoxu_fejurozediw_fowegivojifafo_rijewu.pdfIn PDF document text
    • http://files.hudsonvalleybookdesign.com/uploads/1/3/1/3/131381605/vudetiwida_garovifu_ravegogigamu_damez.pdfIn PDF document text
    • http://files.kayenaturalbeauty.com/uploads/1/3/0/9/130970003/6932024.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/6df681e8-84b0-4068-ab1d-7d0d725c9425/petaziku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd8c82c6-5086-422f-9e59-5b344e4ec05d/8477073339.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab4fd4d5-81df-4a6f-b106-2ebcc07dd355/94939312718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1254/5950/files/honeymoon_from_hell_series.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2341/6995/files/msi_boot_from_usb_bios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7209/4362/files/discard_rules_for_munchkin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3005/9940/files/9641383123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/45095476243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9414/5176/files/dungeon_and_dragons_5e_players_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2452/2143/files/zane_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2665/2055/files/game_of_thrones_ascent_reincarnation_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6333/5326/files/72756304988.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_off00006974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6974 5288 bytes
SHA-256: 66436c67aaca691d573cc62c7d43c1d71ee0fc80a34d5ffe001d84ce70627975
font_01_sfnt_off00007ba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA6 10428 bytes
SHA-256: 818bd3a10c3ccf1876ff85aa7feb01b87de96b074bc9f012dab31193021bec26

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