Malicious PDF — malware analysis report

Static analysis result for SHA-256 52fa625411b5ea11…

MALICIOUS

PDF

57.3 KB Created: 2020-08-24 11:49:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fc7e92c467541a71d8f4aef7033d921d SHA-1: 5675c0206fee822507856d2bd2c411cf39b42f0e SHA-256: 52fa625411b5ea11426a10c7e69bd2634040a6167c12764afca41b30ddf94695
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF document contains a link that redirects to a known malicious infrastructure, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains the text "Impossible game answers 44" and the malicious URL, suggesting a lure to a malicious site. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

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=impossible+game+answers+44 In PDF document text
    • http://files.jessaarcher.com/uploads/1/3/0/7/130775125/79aef.pdfIn PDF document text
    • http://files.champagneandlinen.com/uploads/1/3/1/0/131071037/98d598a1.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/1/0441/2764/9944/files/emirates_flight_crew_uniform.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/1_night_in_chyna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8110/5562/files/dynamics_365_for_finance_and_operations_development_cookbook_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/carburateur_zama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/64575325839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3663/8369/files/kutun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/7710/8647/files/55308784975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7808/0925/files/arduino_tutorials_point.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6673/7311/files/zinaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2924/9694/files/96654974624.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D52 5396 bytes
SHA-256: 17fb5b5c19d07ef1da57f0670b0e4a54343760372b00f979974d8305ef064e88
font_01_sfnt_off00008fac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAC 16648 bytes
SHA-256: 3f3330e7956d48986570e2ee434101b008618a196c24deec5dd72684fd739631
font_02_sfnt_off0000c35d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC35D 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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