Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e3bdbc60b7f44db…

MALICIOUS

PDF

41.1 KB Created: 2020-08-20 18:08:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69307c54b94d8e4a140725d50d0e16a0 SHA-1: abc36576f5fc79d2a98aa603d02c3091a55af255 SHA-256: 8e3bdbc60b7f44db93c80e012daee05148a112fc18517b9a0d86c7570acb2f76
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=dog+howling+at+night+sound. While the document body contains garbled text, the presence of numerous links suggests a social engineering attempt to lure users to malicious content, likely for phishing or malware distribution.

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=dog+howling+at+night+sound In PDF document text
    • http://files.windsweptpoodles.com/uploads/1/3/0/7/130776536/6316954.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/1/0433/7047/9766/files/data_analysis_with_open_source_tools_janert.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7035/7661/files/kenmore_coldspot_model_106_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/satuvosovutifusojax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3957/1611/files/zowewevos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8522/6393/files/fallout_4_gas_masks_of_the_wasteland.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9224/5666/files/18913869375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0563/9836/files/27739036411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/gobefeti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/filewesotukiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7431/3622/files/dexiporivamini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2410/5121/files/nasutoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7914/5374/files/candy_box_cheats.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_off000064d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D7 5080 bytes
SHA-256: 68b536cffa5b4066f36e637ddc14ba60e802bfa4fb60e80a737e5da71e3ce407
font_01_sfnt_off00007630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7630 9812 bytes
SHA-256: 939276943196ff66e785492d0eda4ab8719f917acc198a389631a66995bd1ddf

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