Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3def2decad19794…

MALICIOUS

PDF

44.0 KB Created: 2020-08-14 22:23:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1fb2dd137f8229423372d6af29b5b8be SHA-1: a44f01767f4203573133513db5470ee5ce580e93 SHA-256: b3def2decad19794d10941989d7b776b17439103a09d457ca6bc390d3f67b99c
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The presence of a 'download button' lure further supports this. The primary malicious URL is https://ttraff.ru/wb?keyword=cook%20once%20eat%20all%20week%20cassy%20joy%20garcia%20pdf, which likely leads to further malicious content. No scripts were extracted, limiting the analysis of the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=cook%20once%20eat%20all%20week%20cassy%20joy%20garcia%20pdf In PDF document text
    • http://files.westhartselle.com/uploads/1/3/0/7/130774965/vufinejenaziper_sulejale_bipogufet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0269/1743/files/81361892746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78046530146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/35358868258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7217/6799/files/77628271286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1783/7467/files/have_you_ever_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4964/7254/files/july_august_calendar_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3429/6988/files/bipologisutakelarogeladal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8350/5562/files/51747679444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0625/4504/files/bodybuilding_nutrition_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/raxigakilazirozug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6921/7699/files/partnership_deed_format_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1383/2857/files/rujevirakezejupuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7473/8586/files/sciatic_nerve_glides.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E08 5468 bytes
SHA-256: ccf3077ffccdc6c7e1fd441e9401ded2f8c24a82eff32fdb8ae7758da98468b2
font_01_sfnt_off000070cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70CC 10524 bytes
SHA-256: 603fe45fb107b6fa83ba09c8805402676690817eed1845244adf251293046a79
font_02_sfnt_off000094cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94CD 4324 bytes
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd