Malicious PDF — malware analysis report

Static analysis result for SHA-256 807cd8203d91515a…

MALICIOUS

PDF

52.6 KB Created: 2020-08-21 22:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 93808056e1ea437de49405a86154fa30 SHA-1: bba68ba445903a74cc61b977ccada58110e430b5 SHA-256: 807cd8203d91515abd61215f6b06e54d2e42350683a323af8850e5fbf6043752
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to redirector infrastructure, suggesting an attempt to distribute malicious content or phish for information. The document body, though corrupted, contains text related to a 'unit guide' and includes the malicious URL, reinforcing the lure. The ML classifier strongly indicated maliciousness, and the presence of redirector links aligns with common distribution tactics.

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=medieval+2+total+war+unit+guide In PDF document text
    • http://files.absterpokemonshop.com/uploads/1/3/2/7/132711999/872049.pdfIn PDF document text
    • http://files.thelovelyphotographers.com/uploads/1/3/0/7/130776126/3611084.pdfIn PDF document text
    • http://files.cactusgems.com/uploads/1/3/1/6/131606672/detotugex.pdfIn PDF document text
    • http://mesunida.spacetimedance.com/uploads/1/3/0/7/130738731/8130616.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/1/0435/2226/1143/files/list_of_us_cities_by_population.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0583/6438/files/jebufogiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2423/5170/files/basic_of_c_programming_language_tutorial_filetype.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1803/1001/files/hooked_on_phonics_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3775/3501/files/56298512928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4595/1400/files/9686798500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80789229335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7260/8663/files/sudimudipenafuruwaf.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_off0000918c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x918C 5104 bytes
SHA-256: 6479970ba2f87c7171014c58dc947f2707523676abb31416075bb987a77788db
font_01_sfnt_off0000a316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA316 10204 bytes
SHA-256: 65c9de0b7fb9927221b61187ab4d06595091c3484870d2a8c4d5adc12dc00ce8

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