Malicious PDF — malware analysis report

Static analysis result for SHA-256 16df7f7826114a24…

MALICIOUS

PDF

47.8 KB Created: 2020-08-10 00:26:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f503c7e619d7221244f0a0e6ccaab06 SHA-1: 7a5c6de7940d5841c8229a2bcee0e31626809380 SHA-256: 16df7f7826114a2449e9bde906f61a9412088fb785a935a3e5a1feb57a4c4161
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious intent, including links to a known redirector and a large number of SEO-linked PDFs. The document body and embedded URLs suggest a lure for free downloads, specifically mentioning 'ascendance trilogy book 1 pdf'. The primary malicious IOC is the redirector URL, which likely leads to further 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=ascendance+trilogy+book+1+pdf In PDF document text
    • http://zofip.nomoreryans.com/uploads/1/3/1/4/131438453/kekixujujuse-barusuxafalofip-rojurop.pdfIn PDF document text
    • http://files.wviolin.com/uploads/1/3/1/6/131607229/1972041.pdfIn PDF document text
    • http://files.eurekamakingadifference.com/uploads/1/3/1/0/131070625/5528038.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/1/0434/3313/2193/files/zekisazuduzaxafetizuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9162/3077/files/memento_mori_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevesuladufutaniwor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2063/9646/files/msxml_4._0_sp2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4156/8421/files/cloud_architecture_patterns_o_reilly.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/dezexomirubibisut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3137/9619/files/38313191611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9476/8792/files/behavioral_disorders.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/82229035712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gejazopemovaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9870/files/mikadatunowegedasotevexam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/71523537942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6768/6558/files/nusevanive.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_off00007d20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D20 5668 bytes
SHA-256: c04a35b6e2d0072a68af730c791975984958a64a5d0b7ec6548c68605dd59bd8
font_01_sfnt_off00009085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9085 9964 bytes
SHA-256: 6cabb53fcac30e64d0b99005597c5438d1e73c3cec7714ac4f7c693c21809018

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