Malicious PDF — malware analysis report

Static analysis result for SHA-256 98d74816dfaecb21…

MALICIOUS

PDF

45.7 KB Created: 2020-08-14 21:08:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b27ebaf6fcb118149866a0de9be8faa1 SHA-1: 74bd72d2a4e1ba925b116beda8304f89ee893bbc SHA-256: 98d74816dfaecb2184a7e5be4229b159cfa6480c08bbec68f0471f70bcd412a8
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=inform+educate+entertain+vinyl'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body also contains the primary malicious URL, suggesting the intent is to drive users to this external resource. The presence of a callback phishing lure heuristic further supports the malicious intent.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=inform+educate+entertain+vinyl In PDF document text
    • http://files.danklemencic.com/uploads/1/3/0/7/130739631/vuxijibegene.pdfIn PDF document text
    • http://files.startupjumpers.com/uploads/1/3/2/6/132682851/1ffe05c28aaa.pdfIn PDF document text
    • http://files.fourthelementparanormal.com/uploads/1/3/0/8/130814588/palemovoxokogixij.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/1/0431/6761/3087/files/rukuvakubazutopikotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5216/3482/files/zimox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38140624907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6635/2028/files/tivabebed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9362/2935/files/spotify_free_apk_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7372/4825/files/gaxirixorururas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8669/0969/files/wacom_intuos_pro_pth-_651_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1694/4807/files/angularjs_interview_questions_and_answers_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4021/1097/files/tijenapedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3602/4737/files/synecdoche_new_york_screenplay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuxojusi.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_off0000667b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667B 4972 bytes
SHA-256: 1b5f421506fb72de26ca8fe226c26ca49018ffe1581d446175073f568a563064
font_01_sfnt_off00007747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7747 10672 bytes
SHA-256: e8d4f56145aeffecb59417985882cea20e3e0a2de53e2f7f4c7534419dfeedf9
font_02_sfnt_off00009bb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB2 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c