Malicious PDF — malware analysis report

Static analysis result for SHA-256 688161c1f7f433a9…

MALICIOUS

PDF

42.4 KB Created: 2020-08-19 00:31:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e0a48ad372ff3395ac4dc8d2d20a29df SHA-1: b8630b8c2ee5680f9f51c96718841c5ea99a59d8 SHA-256: 688161c1f7f433a96183be12f0ce8f00fad3f00ab9582e12c2ad992bfca61cbe
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body, though partially garbled, contains a URL that is also flagged as a malicious redirector. This suggests the PDF is designed to trick users into visiting a malicious site, likely for phishing or malware distribution.

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.com/pify?keyword=add+header+row+to+excel+sheet In PDF document text
    • http://files.tamaralow.com/uploads/1/3/0/8/130814861/dunopulakigi_gudupa_duragarevi.pdfIn PDF document text
    • http://files.fandrlive.com/uploads/1/3/0/7/130775858/450736.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/1/0437/7165/8392/files/mirokajojatoxek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8662/4406/files/59163239426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4779/2288/files/asia_cup_2020_schedule_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6067/2165/files/mibodomamewufutusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4774/6721/files/29919250451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8266/9475/files/advanced_d_d_monster_manual_1977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8755/1893/files/adder_tv_shows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7118/4794/files/63212793166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3934/9146/files/6779642544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4103/0293/files/nosasenojenobiperorixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8371/0117/files/rimepubatulimajufunafije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/bosquejo_del_libro_de_romanos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/27781320637.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67F0 5176 bytes
SHA-256: 1ec7c07a62c613f3111dbadcd54ede82cc98f5ab78c003e0069559d424feeccf
font_01_sfnt_off00007996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7996 10284 bytes
SHA-256: 10c103c3c7c151b4ecc7101905af2bbcf53e91e9380e6bc490aa5c5161d7ef22

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