Malicious PDF — malware analysis report

Static analysis result for SHA-256 918b0077eb60d974…

MALICIOUS

PDF

38.8 KB Created: 2020-08-18 21:08:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 09a0ce080a1a82a06fab664d65e0c668 SHA-1: 886ed7a9d4f20fd5d41fdb5e9a8b8a7039bf91d7 SHA-256: 918b0077eb60d9741841d4e0e24cb9e30e35a4d7c2f7203a2261a601816459ba
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a link to a known malicious redirector. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to other PDF files, many hosted on cdn.shopify.com. The primary malicious URL is https://ttraff.com/pify?keyword=operation+alamelamma+kannada+film, which is likely used to distribute further malicious content or redirect users to phishing sites.

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=operation+alamelamma+kannada+film In PDF document text
    • http://files.ansfun.com/uploads/1/3/1/4/131438453/gumaxuxubevokevo.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/1/0440/6640/6550/files/13469375425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8892/8150/files/mosafeximiloj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/ridepow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4599/4146/files/vuranadul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/39436497791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4902/5690/files/44424694299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2329/2840/files/difference_between_inflectional_and_derivational_affixes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6385/2708/files/meeting_agenda_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/topijozuvinexomelumorow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4353/4486/files/towonoposopega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4484/5206/files/periodic_table_with_atomic_mass_and_atomic_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1175/1588/files/33530660777.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 3

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_off00005ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB7 5100 bytes
SHA-256: 64b83054f40cf3ac5c2047315dae17e906d96d710bbda489832ee3d6d9b24bef
font_01_sfnt_off00006bf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF6 10128 bytes
SHA-256: f011eb74687ed2f25f070129f49e385ae64931e4dec93b7278233255bbc5f27e

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