Malicious PDF — malware analysis report

Static analysis result for SHA-256 e51cf5277d6ca026…

MALICIOUS

PDF

59.4 KB Created: 2020-08-05 17:45:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b63dded829da4c5d9444e93b1cf4d5d SHA-1: e76bd5ffdfa070320b59975f348f695e0e641e55 SHA-256: e51cf5277d6ca026a786913f1663f345ff65658601aaa45e57858a20c699809f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. This URL is likely used to funnel users to a malicious site. Additionally, the PDF includes a large number of external links, many hosted on Shopify, which is flagged as a link farm. The document body contains garbled text but includes the suspicious URL, reinforcing the malicious intent. The ML classifier also strongly indicated maliciousness.

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=alprazolam+0+25+bula+pdf In PDF document text
    • http://files.voicescienceworks.org/uploads/1/3/0/7/130775352/2187041.pdfIn PDF document text
    • http://files.mtmacedondawnservice.org/uploads/1/3/0/8/130873738/7064877.pdfIn PDF document text
    • http://files.calvary4you.com/uploads/1/3/0/8/130874433/sipebiruwuxavij_zizozowejokom_xedep_muxiveni.pdfIn PDF document text
    • http://files.maaemi.com/uploads/1/3/0/7/130775649/talixa.pdfIn PDF document text
    • http://files.greetingscomrade.com/uploads/1/3/0/7/130739746/d370ca.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/1/0432/1761/7057/files/27536425106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/95824193779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1630/6344/files/grammar_lessons_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0780/1501/files/82547261916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0154/3831/files/kioni_remote_desktop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9058/3464/files/lafegagilegog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5157/3657/files/65776682041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4517/5971/files/tratados_y_convenios_internacionales_para_promover_el_desarrollo_sustentable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8213/0332/files/88686338673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3222/9541/files/vawomasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6628/5464/files/bearing_size_chart_in_mm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/9591009932.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_off0000a70b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA70B 5588 bytes
SHA-256: 0f7cc4accb7cfb56de15cfc7f3a9532d05fb91f1b97d0681f23fd7a421687549
font_01_sfnt_off0000b9fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9FA 11864 bytes
SHA-256: 851fa8d5ee21afcc9c7dcbad46f11cc89ed57d978681a42b44f53335cd28a2eb

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