Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6d52dbe04ae92ef…

MALICIOUS

PDF

44.3 KB Created: 2020-08-18 15:19:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bd98e016431b0c947e58935c4d48c8db SHA-1: e0fe68b3937d32b087274343e472f61809e0d854 SHA-256: c6d52dbe04ae92ef9db102c87b060b04cf070b884d8a151c92b87138ebdc75c4
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download for 'Microsoft chess titans for windows 10'. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the link leads to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger link farm, suggesting a phishing or scam campaign. The ML_NYX_PDF_MALICIOUS score further supports the malicious nature of the file.

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=microsoft+chess+titans+for+windows+10 In PDF document text
    • http://files.fcpsartsacademy.org/uploads/1/3/1/3/131382808/943b37c.pdfIn PDF document text
    • http://joguz.itchyfeetfamily.com.au/uploads/1/3/1/3/131383483/9880702.pdfIn PDF document text
    • http://files.theschenectadytradingcompany.com/uploads/1/3/0/7/130775084/d79f366213a04e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/wofexepenijeragema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/psychology_class_11th.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5248/2208/files/98369681135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5466/9729/files/98289347251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0755/5222/files/walk_through_walls_fire_red.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/pvc_roof_insulation_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9032/2335/files/42749990915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4727/2098/files/jenigipiguwevemad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3503/1712/files/lol_morgana_support_guide_german.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000606b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606B 5156 bytes
SHA-256: 777e203e1241e104bd3ac6d40298ca10a3ffcb3447c8e8a2f03ccd0da092ed86
font_01_sfnt_off000071f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F6 10916 bytes
SHA-256: ab496e9c1a84370bb0d7f2d447bd1c7600cd343f189cfef3d8b629ec1299283e
font_02_sfnt_off0000966c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x966C 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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