Malicious PDF — malware analysis report

Static analysis result for SHA-256 8465a4e454ec76e0…

MALICIOUS

PDF

43.4 KB Created: 2020-08-11 16:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6e1b29e37e8c66a9dc7714b0956aae5 SHA-1: 1dceeb90666018a95c6e826947d469a1743d87c4 SHA-256: 8465a4e454ec76e0b0b15b7ded4ff18839204631c626e81cf790e18f0ea0876d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL, https://ttraff.ru/pify?keyword=5+methods+of+conflict+resolution+pdf, is flagged as malicious and associated with SEO link farms. This suggests the document is designed to drive traffic to malicious infrastructure under the guise of providing free resources.

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=5+methods+of+conflict+resolution+pdf In PDF document text
    • http://files.enfesnefes.com/uploads/1/3/0/7/130739037/dozolojo-levibupejo-japubonumasu.pdfIn PDF document text
    • http://files.tidytimeservices.com/uploads/1/3/0/8/130874522/jijojebobazejij.pdfIn PDF document text
    • http://files.bluejupiter.com/uploads/1/3/1/4/131438353/30eadc60b5d.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/1/0438/5072/7584/files/writing_academic_english_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6827/6384/files/aafp_board_review_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3450/7426/files/fungal_disease_in_plants.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/9392/2726/files/importance_of_biology_in_our_daily_life.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/xivemokazinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1152/2209/files/fuvejuwovivulad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/vudelopubazuwenona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0531/2163/files/asm_mfe_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0936/7454/files/xegejibikotuniwotefolik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7154/4225/files/cogic_affirmation_of_faith.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/zezosujofajuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8923/9969/files/investment_banking_and_financial_services.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 4

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_off00006c52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C52 5212 bytes
SHA-256: 3977309ce79ae6dbe80418ad8b847b98d71f52f323d5cd3d840d27acc93139a1
font_01_sfnt_off00007dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEE 10188 bytes
SHA-256: a889c94f18f9f4c9c23a766a3d319d501d0a8f01226a60989c86622e5fceec4e

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