Malicious PDF — malware analysis report

Static analysis result for SHA-256 982b145d666ff201…

MALICIOUS

PDF

85.7 KB Created: 2020-08-08 01:28:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3bd503d0d0d5e7e699dc4a65793bf9c8 SHA-1: 9bd2ac38be794baa71523c3e61cbf25ffdb82a1e SHA-256: 982b145d666ff2018f34cf939c94be2ee458213103fa45bf81da9dd3765ee276
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=reading+comprehension+for+esl+students+pdf'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The file also exhibits characteristics of a link farm, with numerous embedded URLs, further supporting the redirection attack pattern.

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=reading+comprehension+for+esl+students+pdf In PDF document text
    • http://files.moorishculturalbizarre.com/uploads/1/3/0/7/130740049/mujunogo.pdfIn PDF document text
    • http://files.nikkiarnell.net/uploads/1/3/2/6/132681910/sewuwozodudovu_sikuz_najetivima.pdfIn PDF document text
    • http://files.freezerlink.com/uploads/1/3/0/8/130814288/6335778.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/1/0431/2819/3184/files/jisebow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0956/4068/files/drudge_report_rss_feed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/38732486703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0497/6548/files/susebivuvakekuzomanufixed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/69307802376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/37675906083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7135/6582/files/sql_join_multiple_tables_with_conditions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/40563848860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7228/3033/files/99709871328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93366398369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2128194791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/tovixutup.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 2

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_off0001128e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1128E 5576 bytes
SHA-256: 536ab808ce9bf8c8f617e3ae2581d6932e361964eb667753c51cc375af1a6987
font_01_sfnt_off00012567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12567 10500 bytes
SHA-256: 4ded2f423bc1a7895f2cac36f606af82e848df1c29dceb663b21d4621d6a7631

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