Malicious PDF — malware analysis report

Static analysis result for SHA-256 18aa875b10852ce3…

MALICIOUS

PDF

37.7 KB Created: 2020-10-10 06:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a44f43a29ccd525abe976fd99ffa6b15 SHA-1: 4e258c079e31f11ae9e65e5645e679c3d6d30929 SHA-256: 18aa875b10852ce34e2a266031d705ff3ab04b38f1f6ac557b397d6c4db6b949
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=tree+of+good+and+evil+tattoo In PDF document text
    • http://gebitiret.challenge2grow.be/uploads/1/3/1/4/131453046/pubaxativozamipejobu.pdfIn PDF document text
    • http://files.myredhairedauntie.shop/uploads/1/3/1/4/131413718/6255237.pdfIn PDF document text
    • http://fategew.commoditieslawyers.com/uploads/1/3/1/8/131856077/2851499.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005762.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005762.bin)
    • https://cdn.shopify.com/s/files/1/0492/2412/2524/files/praying_mantis_cocoon_egg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3937/5012/files/65971854765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/my_hero_academia_season_1_episode_55.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4ffb539-5252-49ba-a2a4-203afa017718/34774299621.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3b8eafc-9941-4997-8402-c49882db7cb0/55586692442.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecd0359a-5e13-49a7-a1d6-1f33377157d9/95417920129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8938a24-33a6-4b3b-ad23-8447206c76df/70883767306.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd6efb19-10b4-4410-9633-b32b05d7fdfb/bapakobipod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/077dbc6b-5a54-434b-82b0-98f5088115fb/36178538508.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c2869a7-4ae9-4ffa-8a31-93c82793d85a/87956009047.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24d811da-1068-4f20-af96-35452d4e14c8/korofudekot.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 extracted file (font_00_sfnt_off00005762.bin)
🗂 Part of campaign: aspontaneoustraveler.com 3 samples

Related samples 2

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_off00005762.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5762 4904 bytes
SHA-256: 312fdcded6ca298306357e59478585b2df8309bf954e8f286ea6505c6dd27fb5
font_01_sfnt_off0000682b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x682B 10184 bytes
SHA-256: 86d84e736c3ac2cb39ae653069112d1b09a65ca4b547b72c8aef8794b80a2620

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