Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8184d74cdc011d3…

MALICIOUS

PDF

32.5 KB Created: 2020-08-16 21:00:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c08f45733657d6c1991772d30b005625 SHA-1: 2ad6c66588f225c8691831fd53731303e32222ea SHA-256: f8184d74cdc011d3ccc6ddaee4a94485c57cbe90d181dc2c26847f1c0cef7aea
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary redirector URL pointing to a known malicious domain. The heuristic firings indicate that this PDF is designed as a link farm, likely to distribute malware or conduct phishing. The document body, though partially corrupted, contains text related to a 'mapleroyals leeching guide 2017' and the malicious URL, suggesting a lure to entice users to click on the malicious 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.ru/pify?keyword=mapleroyals+leeching+guide+2017 In PDF document text
    • http://files.bercgroup.com/uploads/1/3/1/6/131637896/tofaka-minalemexe-kalojomevogalol.pdfIn PDF document text
    • http://files.i-on-food.com/uploads/1/3/1/4/131453068/nuwogagijeza.pdfIn PDF document text
    • http://files.cornerstonechurchwaynesville.com/uploads/1/3/1/4/131407709/1824571.pdfIn PDF document text
    • http://files.thegeorgiaruthhouse.com/uploads/1/3/0/8/130814769/bbabc2.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/1/0439/0695/7467/files/tidowiwemulubapefaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/tidekusekolukibixagetoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2325/4183/files/antropologia_unam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4756/8039/files/bepegivezasije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/20781233608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/the_righteousness_of_god.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3915/2536/files/71010859055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/51223452111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5413/5456/files/cranial_nerves_names.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/duwoki.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 6

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_off000041e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41E8 5848 bytes
SHA-256: 78bc88e9321825e758ea56d0f787c8a6f3646f4ee41c005a76f8e58d114513e5
font_01_sfnt_off000055e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55E0 9264 bytes
SHA-256: 78a84edcd87546438dc4849d822c61e755f2d7789f0b12ac5c1a4036b0f88f21

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