Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae5f65c687899761…

MALICIOUS

PDF

49.5 KB Created: 2020-08-10 06:17:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 941fdfc6d561dc7723d7239c2a45dd2d SHA-1: 871acba05a2d5b1ca6e04ff91445d8844d1b0d7b SHA-256: ae5f65c6878997611795dbc7b13c40fa0d13865819cf00f57921ce312c97a433
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=ethical+hacking+for+beginners+2020+book+pdf'. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or malware distribution, under the pretext of offering a free book.

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=ethical+hacking+for+beginners+2020+book+pdf In PDF document text
    • http://files.lostarkwoodworks.com/uploads/1/3/1/4/131453484/ruxumulenurozage.pdfIn PDF document text
    • http://mimilufik.anaicostarica.org/uploads/1/3/1/6/131606490/88103263d41bff.pdfIn PDF document text
    • http://dudulalam.littleseedcounseling.com/uploads/1/3/1/6/131637814/f99c4409c6.pdfIn PDF document text
    • http://files.wildaboutwampum.com/uploads/1/3/1/8/131871721/diwurak-zajegapoxobile-juzewovupe-wuwenutawilotal.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/1/0429/7077/5706/files/87518899681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38138836364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2859/3315/files/23782486874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/zopapedubazinelel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0102/6459/files/apprendre_le_langage_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1454/3771/files/21613052792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6388/6495/files/divazotopokafan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1288/0541/files/60794819841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/nitokelazov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1251/4201/files/xexipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7581/9927/files/18277391893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7424/8101/files/fefitafexur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/depepixumerokonus.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 8

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_off00008277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8277 5852 bytes
SHA-256: 91d2b5cd7149ff8d56487b57214b2660a56ae9dbd20b80fa44b0875004084fe6
font_01_sfnt_off0000965c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x965C 10128 bytes
SHA-256: 56128be59fc74c9092684a41db169f8d120aeeb441dd9ed307fe9795f11a1108

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