Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ff8d1f4313d53c2…

MALICIOUS

PDF

38.7 KB Created: 2020-08-19 21:49:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f536b349ba360369c70c12ac067fc55 SHA-1: c50f4ee9efc5daeb05f26cb67f82fe8c91b7f31e SHA-256: 4ff8d1f4313d53c272ea42e1c6e0db9f01deec03eafe8a981cd654b39bc67190
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=assamese+film+pagli+full+movie`. This link is presented within the document body, disguised as a search result for a movie. The PDF also contains a large number of external links, many hosted on `cdn.shopify.com`, suggesting a link farm or SEO poisoning tactic to distribute malicious content. 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.cc/pify?keyword=assamese+film+pagli+full+movie In PDF document text
    • http://files.dennisglover.net/uploads/1/3/1/4/131483317/40d649.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/1/0433/0396/0731/files/javascript_array_intersection.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0858/5891/files/how_to_know_higher_worlds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9150/6840/files/vediriwever.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/5572134750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/25476742970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/19872928050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/4236/0744/files/apnea_obstructiva_del_sueo_medigraphic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3591/7464/files/82503956738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5765/9560/files/allen_bradley_rslogix_5000_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9486/6088/files/17553021195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6567/0806/files/jesefagaxifov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C0E 5176 bytes
SHA-256: 0444b56c8bd4b7893f4b03de6eebd35e9a21b578b0e7f63b074d46cf0212acdb
font_01_sfnt_off00005da2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA2 4376 bytes
SHA-256: ce1763e74b3e568b5890791fd3f59518553565a9779dbfaa16b1da15ea665ffb
font_02_sfnt_off00006ba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA8 10048 bytes
SHA-256: 6295a899bdc9cb4cae7f51e94403771fd93a6c34e39b38d5fd2abb71641e5441