Malicious PDF — malware analysis report

Static analysis result for SHA-256 448a6e1d65d040a3…

MALICIOUS

PDF

38.6 KB Created: 2020-08-10 21:38:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f976695af6e22c4e41a13f05bfd880b SHA-1: 26bf851389c394b82a3675dc6a0d268526a758a5 SHA-256: 448a6e1d65d040a3bb238b50eafddb5c651e801082370e17493730eea62833eb
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to Shopify domains hosting other PDFs, but one critical link directs to a known malicious redirector at 'ttraff.com'. This suggests a link farm or redirection tactic to obscure the final malicious destination. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=knee+pain+exercises+arc+pdf', indicating the primary lure is related to knee pain exercises.

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=knee+pain+exercises+arc+pdf In PDF document text
    • http://files.helenjonesart.com/uploads/1/3/1/3/131380953/0222c41b1571c.pdfIn PDF document text
    • http://files.eloisekerr.co.uk/uploads/1/3/1/1/131164402/dumefawavevu.pdfIn PDF document text
    • http://xuripawo.triplerranch.net/uploads/1/3/2/6/132681352/5266793.pdfIn PDF document text
    • http://files.counterpunchparkinsons.com/uploads/1/3/0/8/130874317/7f13aefe3.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/1/0433/4478/9669/files/64836524310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3100392900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7102/0960/files/fasukukilumejagarumidenex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8992/9116/files/toronukafewinaneli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0662/3903/files/doxanel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4152/0790/files/garemolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/mapa_turistico_aveiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/pisuduro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3689/3599/files/7077146966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5034/4352/files/l_agenda_2020_de_l_union_africaine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4749/4567/files/xumaxowabopofomanodozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/independence_day_anchoring_script_in_english_for_school.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 8

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_off00005beb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BEB 5156 bytes
SHA-256: 171ef04e093a18b414487aad0941e968c44766d0bfa2261a6ec98940361ebdda
font_01_sfnt_off00006d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D78 9440 bytes
SHA-256: d8ec094874dbd567f32f795f22f7e61f0f8cf2ce66a98c01008b57448418036e

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