Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec4b6585d79e13d7…

MALICIOUS

PDF

44.0 KB Created: 2020-08-17 13:14:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8fcbab3554ea37c13ccadac76f38a8ca SHA-1: caec5d18492b3600e5293d4bb44f8fba60a5e145 SHA-256: ec4b6585d79e13d7d42deca8dc12ccf3c0018b1ff5a1c1c3c48a732e3f569130
194 Risk Score

Malware Insights

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

The PDF document contains a deceptive title related to new Android phones, likely intended to entice users. It embeds numerous links, including a critical redirector link to 'ttraff.com', which is known malicious infrastructure. The document also features a link farm with many external PDF links, suggesting a SEO poisoning or link distribution tactic. The primary attack vector appears to be directing users to malicious sites via these embedded links.

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=new+android+cell+phones+coming+out In PDF document text
    • http://files.westfieldbouncehouserentals.com/uploads/1/3/1/3/131384789/4605166.pdfIn PDF document text
    • http://tufafetu.marleyforch.com/uploads/1/3/0/7/130776031/8c82b423ab4ec88.pdfIn PDF document text
    • http://files.southernsideshowhootenanny.com/uploads/1/3/0/7/130739690/jemudejo-nusagetusik-paxorawa.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/1/0432/6372/1637/files/blame_on_me_layton_greene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/totavufezexudus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9348/1885/files/sujet_brevet_washington_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1212/0998/files/54961478541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8564/3420/files/69406670957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0311/7721/files/types_of_data_analysis_methods_in_qualitative_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/2988/3048/files/re_authorization_form_download.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 8

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_off00006dae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAE 5548 bytes
SHA-256: 023fa1e1ce5aaa52608566bf0f87569a518d16ea5f5301e2fcbcb58c37fbda44
font_01_sfnt_off0000806f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x806F 10304 bytes
SHA-256: 38e8e85d5d48b4dae7e4604931cb7399c74a262524c5fd0b81d4595da0795539

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