Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc01cb127a6a8ea…

MALICIOUS

PDF

45.7 KB Created: 2020-08-03 23:26:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bcfd62ea2813c0eeb18c5addd518ca82 SHA-1: 5d0ef6a38153b3b070b3dde7b0661efee1eafcfa SHA-256: 1dc01cb127a6a8ea210ab3473d641dd7a40d38406bab6c634f705f0441145f63
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to mimic search results for academic papers, specifically 'Abnormal psychology ann kring pdf free download'. The primary embedded URL, https://ttraff.ru/pify?keyword=abnormal+psychology+ann+kring+pdf+free+download, is flagged as a malicious redirector. This suggests the document's purpose is to trick users into clicking the link, likely leading them to a malicious site or download. 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.ru/pify?keyword=abnormal+psychology+ann+kring+pdf+free+download In PDF document text
    • http://files.shoppalomaclothing.com/uploads/1/3/0/8/130814043/sivedaxupowe.pdfIn PDF document text
    • http://files.chertsey.school.nz/uploads/1/3/1/8/131856160/wojijepukol.pdfIn PDF document text
    • http://files.escapelandscaping.net/uploads/1/3/0/7/130775232/6283692.pdfIn PDF document text
    • http://files.pastorpraveenministries.org/uploads/1/3/1/4/131406749/968c3a2dc.pdfIn PDF document text
    • http://files.hairbylola.com/uploads/1/3/0/7/130738619/bejibuxoted-xuzidasinitute-subarimaz.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/1/0430/7048/8730/files/sefitawujubon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/86124222589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4279/7730/files/loving_what_is.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6532/7262/files/tezunebubozazunorejageru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7975/3109/files/29155662456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9954/4984/files/40077257053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/24820195205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2109/1484/files/97313932809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0610/6528/files/zisurimatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/60468579064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9239/3640/files/stihl_ms250_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7027/5236/files/gifenijibemirifo.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_off0000694e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x694E 5956 bytes
SHA-256: c418da568416ac559a3de14efcc4a793f618798701826a20f5a62be14c1e144d
font_01_sfnt_off00007d77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D77 14264 bytes
SHA-256: b258a829a3f4ec8484e74004733bca701e801908278235304b8d3f80c6acfa48

Open this report in the interactive analyzer, or submit your own file for analysis.