Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcb269672282ee4b…

MALICIOUS

PDF

45.9 KB Created: 2020-08-02 16:00:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9ec0d029032e8ec1062b528ec7af0f2a SHA-1: ed267dc38f8fb2e45c5a2ed517167afb3168bcd1 SHA-256: dcb269672282ee4b480d655159a314f8d1d80694249822d66031e7d4f8ede7dc
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a PDF link farm, indicating a social engineering attempt. The embedded URL 'https://ttraff.cc/pify?keyword=network+study+guide+pdf' is a primary indicator of malicious redirection. The document body, though heavily obfuscated, contains references to 'network study guide pdf' and the malicious URL, reinforcing the lure.

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=network+study+guide+pdf In PDF document text
    • http://files.mychairspins.com/uploads/1/3/1/6/131637190/wonod.pdfIn PDF document text
    • http://files.beyondwishingforwellness.com/uploads/1/3/0/8/130874055/bbaaf2a4.pdfIn PDF document text
    • http://files.caplantrescue.org/uploads/1/3/1/3/131380626/xoguxaretasitiboka.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/1/0432/3360/7842/files/litixod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2568/9758/files/oblivion_permanent_retirement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4638/5317/files/fiduseguziju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0586/2307/files/webirotikuzuremunap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5619/3955/files/tanurubiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7699/3702/files/jonarazumax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6471/1575/files/97376653320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/the_four_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0939/2285/files/sijuxamovir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5992/7448/files/98346934646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7880/9755/files/lanojidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42479515564.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_off000074bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74BB 5192 bytes
SHA-256: 348f1c24335fa27117accda3bfcc21b9fb6c42f9da627d96af4b11862c639e08
font_01_sfnt_off000086a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A0 10448 bytes
SHA-256: 752d12c2b3404b3eaf382d3db8554fa49d93026707b625cf899171e82b7f50ce

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