Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cb1a8c3689f547e…

MALICIOUS

PDF

48.7 KB Created: 2020-08-05 05:30:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 67f6a49b484ad0de963f2fe74ffddf2e SHA-1: 3df555ec3651be61d3750d57046eac57f208f089 SHA-256: 3cb1a8c3689f547e6feef1e70781bb2dbdaa2f59129f37fe6e5724a6778663cd
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body text. This link leads to a page that likely attempts to trick the user into downloading a malicious file, masquerading as a criminal record certificate. The PDF also contains a large number of external links, many pointing to Shopify domains, suggesting a link farm for SEO poisoning or to host malicious content.

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.ru/pify?keyword=descargar+certificado+de+antecedentes+judiciales+en+pdf In PDF document text
    • http://files.craftpixie.co.uk/uploads/1/3/0/7/130740412/pawogolitibafi.pdfIn PDF document text
    • http://files.jillcranwellwarner.com/uploads/1/3/1/3/131398125/libir-fuxixipajujazu.pdfIn PDF document text
    • http://files.dentacarekenosha.org/uploads/1/3/0/7/130776272/2491248d8e397.pdfIn PDF document text
    • http://files.smithbrosplay.org/uploads/1/3/0/7/130739570/kujusuparejip-zovivumije.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/66808950814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4736/0414/files/73756880874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8564/4447/files/52349939175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7791/7085/files/adam_smith_absolute_advantage_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8561/8583/files/73423954224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3273/0017/files/ge_hydrowave_washer_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6717/9162/files/damozoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2992/8872/files/revolution_season_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8213/0332/files/newisasiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6984/9246/files/81055660300.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000606f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606F 6744 bytes
SHA-256: 048fb1891f432488516cd811e7b04d68e7d39e548ca3495625137f8fb0c23ff4
font_01_sfnt_off00007154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7154 5280 bytes
SHA-256: 1f740a24a0024e2f5611b1e0064f06cce8ba158d0730f77b0b0f8a89f4a39ee0
font_02_sfnt_off00008359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8359 10968 bytes
SHA-256: 2d24b7cd406a5be4fa842852901498586af35b90f73f218185a36e1c08a5cb60
font_03_sfnt_off0000a6f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6F0 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333