Malicious PDF — malware analysis report

Static analysis result for SHA-256 12d0737605719602…

MALICIOUS

PDF

49.7 KB Created: 2020-08-12 02:52:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1cdf9f22d47bba354dd6c40c2145595b SHA-1: c11f622bc385fe4de4af9bf545bdff23519b9042 SHA-256: 12d07376057196021324ff3cdab16e7440116ad89b6327ee0a13f9de009dbe3d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is identified as malicious due to its use of a redirector link farm, aiming to funnel users to potentially malicious content. The document body, while heavily obfuscated, contains URLs that are part of this link farm, suggesting an attempt to manipulate search engine results or lure users through deceptive content. The ML classifier strongly supports the malicious verdict.

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=acinetobacter+baumannii+antibiotic+resistance+pdf+thesis+submitted In PDF document text
    • http://files.diopayouth.org/uploads/1/3/1/3/131380094/gojeforezow.pdfIn PDF document text
    • http://fegase.electricimpulsecloggers.com/uploads/1/3/0/8/130814328/bevadebajuz-defuwuv.pdfIn PDF document text
    • http://files.8trackbooking.com/uploads/1/3/1/4/131407530/kutudixusokoginavu.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/1/0431/2875/0241/files/tubaserojizox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/4592053086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9843/0876/files/ils_ont_mang_mon_fils.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0346/0259/files/beautiful_in_white_piano_sheet_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7840/9622/files/104045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2051/7537/files/i_before_e_exceptions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudivilijekeroleve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3096/8480/files/70756009137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/zivudepekidol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4274895189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2039/3380/files/technical_drawing_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1945/3095/files/94363685267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4052/8792/files/it_ebooks_free_download.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 5

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_off00007840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7840 5492 bytes
SHA-256: 240739477f0001321c466cdc7bb743772a96fdd89d088856d04c48f42539b331
font_01_sfnt_off00008aaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AAF 15172 bytes
SHA-256: a6a38fd5c4ca57e404461600ca6546e0d656a3a6b512dc036464bc77e4d60882

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