Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ad485f9d8922a2c…

MALICIOUS

PDF

51.0 KB Created: 2020-08-06 03:48:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a35e2d89801ed58c51c860faa0229685 SHA-1: ff5e1ca0794470988718dbd0bec747a3e2608040 SHA-256: 1ad485f9d8922a2cb386328030940ff447cdad820b8d3969831eb297b46c1416
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external resources, a common tactic for SEO poisoning and link farming. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=plant+systematics+and+evolution+pdf', indicating a probable phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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=plant+systematics+and+evolution+pdf In PDF document text
    • http://files.dbardogs.com/uploads/1/3/1/3/131380390/tubolex_wukog.pdfIn PDF document text
    • http://files.southcolbyptso.com/uploads/1/3/0/7/130739651/fuwoxes.pdfIn PDF document text
    • http://files.stannelibrary.com/uploads/1/3/1/8/131871602/tokatepagexet-kavopagimu-ladamire.pdfIn PDF document text
    • http://popomelez.theschooloffinetuning.com/uploads/1/3/0/9/130969744/8786055.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/1/0439/7367/3118/files/pulawudoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8503/6706/files/a_problem_book_in_mathematical_analysis_gn_berman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4155504299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8016/3232/files/qualities_of_good_research_problem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6874/2046/files/manual_de_autocad_civil_3d_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5149/1233/files/65416773049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2281/9233/files/discord_staff_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7757/3539/files/how_to_make_commands_on_twitch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/xozobulogutizugalosogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4939/files/retijub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3192/0794/files/about_schmidt_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9927/5935/files/79172112990.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 5

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_off00008ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB1 5368 bytes
SHA-256: 87ce1836521663b38cdca104fcc5d98aea1e973fce12307d76fd29eef0a2aefd
font_01_sfnt_off00009cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CFD 9860 bytes
SHA-256: 23835c6a0e7d7cb9090c90cee89dd1a18cc17909726500981059a417ae60c6af

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