Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6b18903ccaacc3…

MALICIOUS

PDF

39.8 KB Created: 2020-10-27 04:57:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-17
MD5: 81efb77fed4a12f875f527a104ebb993 SHA-1: 44f34d24b78d0461485df87033bba3ce6241001c SHA-256: 2b6b18903ccaacc350fcdc8f283257f6fd7fdf886fa2ac3c55280f56ee747438
194 Risk Score

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://gettraff.ru/wb?keyword=past%20continuous%20when%20while%20worksheet In PDF document text
    • https://belonimilulufaf.weebly.com/uploads/1/3/4/4/134403367/gagiganamume_lotaw.pdfIn PDF document text
    • https://tumegifokax.weebly.com/uploads/1/3/4/2/134235775/nexotutajafonerom.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/1/0434/5082/6905/files/buvidolesokijasorukejibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5111/7475/files/anonymous_chat_apk_play_store.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6534/6725/files/axial_flow_pumps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8262d63-d3ab-46bf-aaf3-8e50f33b737e/pomuvazijeposasumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8855/2870/files/skyward_battle_ground.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9153/5018/files/uc_mini_browser_fast_download_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2651/2544/files/zidizejexizifumikonexexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3185/4756/files/sample_letter_of_intent_to_hire_physician.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/3312/2723/files/vopisovamigower.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2061/7381/files/1997_michigan_football_record.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5826/4736/files/combatives_level_1_clinch_drill.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5638/0574/files/6518207677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3210/7937/files/zomaxanixagizuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6080/4770/files/crock_pot_replacement_lid_7_quart_oval.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005df6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF6 5044 bytes
SHA-256: 0a293962e0397229157cb5f28b9ea0c7ca0af13b67b00b41dac201f22b6fc010
font_01_sfnt_off00006f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1C 10384 bytes
SHA-256: a224136c1c59e8ba18862d135e1a0fb5c373c486cca66f72a270fa5dc268ac10

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