Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fff8222ad0877b5…

MALICIOUS

PDF

43.1 KB Created: 2020-08-18 17:03:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c4cc3e77a99f4e9e9af01df8dabd69f2 SHA-1: 2b2a95011ed6e3188bd1215c7be88982802385ac SHA-256: 5fff8222ad0877b57a0d3b40543d047424259818a3fe8de43cb30c30becdd2b6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links to an SEO redirector, specifically `https://ttraff.com/pify?keyword=formas+bidimensionales+perimetros+y+areas`, which is flagged as malicious. The document appears to be part of a link farm designed to lure users into clicking on these links under the guise of free downloads. The presence of numerous external links, many pointing to Shopify-hosted PDFs, suggests a phishing or scam campaign.

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=formas+bidimensionales+perimetros+y+areas In PDF document text
    • http://files.terredetuni.com/uploads/1/3/1/4/131453843/1441379.pdfIn PDF document text
    • http://files.lambersfisher.com/uploads/1/3/1/6/131606087/fikojuno-tanaz-zofaliwiwiguw.pdfIn PDF document text
    • http://xipagegu.closets-now.com/uploads/1/3/0/9/130969472/8650237.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/1/0432/1142/3902/files/29284881997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9989/6475/files/best_html_to_api.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/xoxozitixerotani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2135/3639/files/hadoop_architect_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gegexovikorojirokelaxedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7980/2782/files/38895322975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6900/6236/files/donald_glover_stn_mtn_kauai_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/tidamebanoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/lokenex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7240/5157/files/lifatiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/23678732709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52657742202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7127/4146/files/wifunirojagiw.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 4

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_off0000669f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x669F 5300 bytes
SHA-256: 25f53e21ac6f4c1a967f0bc7621604baf803fde3517d0a97c3bb6687b0abff63
font_01_sfnt_off0000788a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x788A 11340 bytes
SHA-256: c683e441845930906db0322888a14022f2519d157f51dfdd5f32f1b56efbdf96

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