Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2a89ed3d49e0fa0…

MALICIOUS

PDF

46.1 KB Created: 2020-08-15 03:37:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52b3926a2d9b75b8f188f69b90bc5b31 SHA-1: 5c8c43e314e053de7dde53a191fe813d8e55b166 SHA-256: c2a89ed3d49e0fa0a5c0d6201a23dc973f379ff81e2b5139c1505b5fda0e3e3e
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=best+free+android+app++sites'. This URL is presented within the document body, suggesting a social engineering lure to trick users into clicking it. The file also contains a large number of embedded links, many of which point to external PDF files, indicating a link farm strategy. The primary malicious IOC is the redirector URL, which is likely the initial stage of a phishing or malware delivery chain.

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.cc/pify?keyword=best+free+android+app++sites In PDF document text
    • http://xotewekof.toejar.com/uploads/1/3/1/4/131454012/2361025.pdfIn PDF document text
    • http://dubokirat.andymacdonaldmusic.com/uploads/1/3/0/8/130813979/fosujam.pdfIn PDF document text
    • http://files.thespirallife.com/uploads/1/3/1/4/131454620/8295963.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/1/0430/8631/5682/files/92998765235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/fowomik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0813/7128/files/aines_selectivos_cox_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5489/0149/files/91734199202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/labuwonav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/76709260252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mujunevuduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5325/2757/files/46206782710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/25300324432.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_off000076c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76C9 5052 bytes
SHA-256: a04b7a7181a1749480e6a5f1d24ad55217e181177268dedd5225b1371038f888
font_01_sfnt_off00008808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8808 10580 bytes
SHA-256: 2bad93ed7d12d3766363f535659e3f136e0a95146d9a6747988ae8e76bbf6402

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