Malicious PDF — malware analysis report

Static analysis result for SHA-256 c740bb7c8097b0d6…

MALICIOUS

PDF

49.6 KB Created: 2020-08-07 04:56:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63ca3b558137c6727191859aa45b8c23 SHA-1: 81a0235ef45a15c23e47dda00c9a330c7df7a276 SHA-256: c740bb7c8097b0d669a1f2bc4f832f05775a42661b2fdc0ab057594748dfafe0
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=numbers+in+english+1+to+1000+in+words+pdf'. This suggests the document's primary purpose is to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify links, likely part of a link farm to improve search engine ranking for 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.com/pify?keyword=numbers+in+english+1+to+1000+in+words+pdf In PDF document text
    • http://files.sungleedesign.com/uploads/1/3/1/3/131379578/5869362.pdfIn PDF document text
    • http://files.makerdan.com/uploads/1/3/2/7/132740415/5765796.pdfIn PDF document text
    • http://files.pictoursportugal.com/uploads/1/3/1/3/131383743/befenisefox-gifunufadalu-dizaval.pdfIn PDF document text
    • http://zuwijum.gracebaptistny.org/uploads/1/3/0/7/130739777/vodikelolelofoxibiz.pdfIn PDF document text
    • http://files.mitercontracting.com/uploads/1/3/1/1/131163635/pipopinenete-komisupivug.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/1/0437/7218/2685/files/argent_dawn_rep_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9634/2695/files/66844351854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3090/files/4141521760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/york_furnace_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8380/9443/files/osrs_best_place_to_cannon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1045/6726/files/61494101768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8592/9375/files/luwevof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/abdominal_trauma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7192/9496/files/38818175904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8765/0211/files/dulejatavuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7504/2457/files/jojudimuteveratawu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6421 5640 bytes
SHA-256: 3c2dd00e406ed7f8ebf3dbb828dff76819fae97d92be24e9a0948f67f35902cf
font_01_sfnt_off0000773f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x773F 14588 bytes
SHA-256: a39bbb879dd61d0ae1fa585dacde23e02ea8003d910c6f4d03a43d49e0f1b3a8
font_02_sfnt_off0000a48c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA48C 16060 bytes
SHA-256: d78d7cc1a68daa951b4fbccbcfb906d5a08ad384f187125596154666a45abe72