Malicious PDF — malware analysis report

Static analysis result for SHA-256 4519c7836f9d1875…

MALICIOUS

PDF

40.5 KB Created: 2020-08-24 04:12:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ffbcd013d2f5175849f20f3d8941a849 SHA-1: 9fdf0ceca6a20ed2c076619d035bbd2dd4496822 SHA-256: 4519c7836f9d1875bf459182a27e83b5a5b0437072d1fda0b5cdcba581df0a80
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=trust+deed+template+south+africa'. This indicates a social engineering attempt to trick the user into visiting a malicious site. The document body, though heavily obfuscated, also contains the same URL, reinforcing the lure. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed to improve SEO for malicious content or to obscure the true destination.

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=trust+deed+template+south+africa In PDF document text
    • http://relaxow.myowild.com/uploads/1/3/0/8/130814328/ferixetidawo.pdfIn PDF document text
    • http://files.weeblackbook.info/uploads/1/3/1/4/131409210/dd42e9c0752.pdfIn PDF document text
    • http://files.perinatalstemcells.com/uploads/1/3/2/7/132740480/gabefodirinali.pdfIn PDF document text
    • http://files.mrmsworkshop.com/uploads/1/3/0/8/130814279/ad69b.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/1/0430/3529/5905/files/cadena_de_valor_en_salud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8071/8238/files/57498035420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3080/4637/files/22529753210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9030/3393/files/chrome_extension_crx_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7909/0855/files/61593634354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8589/7627/files/berrigan_races_form_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1410/2950/files/adobe_acrobat_reader_full_version_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8918/2376/files/35843810283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8538/0246/files/46927510549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8857/5638/files/95067841012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8457/0012/files/vaid_sir_anthropology_printed_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/4704/2462/files/adafruit_amg8833_datasheet.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 7

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_off00005f80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F80 5344 bytes
SHA-256: 1bd5d24d3e9f9849a64513b11b91f7dca1453dd260a67669c21dcd2b84268381
font_01_sfnt_off00007182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7182 10744 bytes
SHA-256: 14c8c8d3dead25526a0f19133026618e63b8e451212b59b636b058a2714c23a5

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