Malicious PDF — malware analysis report

Static analysis result for SHA-256 f41ed236abf2cf77…

MALICIOUS

PDF

44.2 KB Created: 2020-08-18 22:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: abb66d1d9d9a4a2905f6b6f609461066 SHA-1: dd83e14ee7b00619863baa8f78afde2703118be8 SHA-256: f41ed236abf2cf77ea7adce451d341bf6aa38d5436a0c8f33719d2134d3e0721
194 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.com/pify?keyword=android+studio+3.+5+bugs'. This URL is presented within the document body, disguised as information about 'Android studio 3.5 bugs'. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on cdn.shopify.com, though the primary malicious intent appears to be the ttraff.com redirector. No scripts were extracted from this sample.

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.com/pify?keyword=android+studio+3.+5+bugs In PDF document text
    • http://vexixo.iriscleaningservice.com/uploads/1/3/0/8/130874082/talonune.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/1/0427/6027/4087/files/arizer_air_2_user_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0540/0472/files/suwoluz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2830/8387/files/89825882628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1566/5824/files/63437552725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8197/3416/files/68298235184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2783/0696/files/jatosewoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4007/0042/files/99768268702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5375/1189/files/94042573831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9821/0461/files/23216135719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6518/6206/files/gepatidewipul.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 2

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_off00007066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7066 5200 bytes
SHA-256: cdec6e197d7566ed9f1aecef489d6ce7b3fdbce0efd021585601e0fca391fad3
font_01_sfnt_off00008224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8224 10060 bytes
SHA-256: a7f4a951adce046061d52ebc3019b69625453fc9d2ffe88d995eb7459f51c231

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