Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb16412ff0bd2626…

MALICIOUS

PDF

49.5 KB Created: 2020-08-19 22:48:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4caea1d522d19361a1c42e5a8ff10dbc SHA-1: 51be4f2e2731eb8ae4a59badae564f8d34e9490e SHA-256: bb16412ff0bd26267015ea7e6672dedde9fef1fd9ac3244d65dc42f142249b69
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=que+es+la+apomixis+pdf'. The document body also contains this URL, suggesting it is the primary lure. The file's structure and the presence of many Shopify-hosted PDF links indicate a link farm designed to improve search engine ranking for malicious content.

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=que+es+la+apomixis+pdf In PDF document text
    • http://vapegi.insidenanaskitchen.com/uploads/1/3/1/4/131406717/4348.pdfIn PDF document text
    • http://nifazik.autismconsultnc.com/uploads/1/3/0/8/130874655/f6f2ec62cc76.pdfIn PDF document text
    • http://mefijiwu.vanpickuppr.com/uploads/1/3/1/4/131437044/viriwogapexap.pdfIn PDF document text
    • http://files.loukobin.com/uploads/1/3/0/7/130739814/palazaximi.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/1/0433/1739/5611/files/budget_report_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0866/3456/files/38114373342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2430/8630/files/56474068086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/guwesimutetalajizobanubel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5942/1092/files/54281885924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6911/0432/files/78143161447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/45523039751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7103/6822/files/gospel_choreography_videos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7875/files/lidasozajare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2386/7805/files/kesafoderuwuzufapomup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6081/2183/files/exit_interview_template_word.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 3

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_off00008396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8396 5220 bytes
SHA-256: 365fac49017a586c527743a1cbc5108e3c5e24756bf104e8ebf6ed245cea533e
font_01_sfnt_off00009555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9555 11060 bytes
SHA-256: 4d4a6b0e59741f9faa3cf567477965e8476df67ba4c20002495cbe7a3017ec3e

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