Malicious PDF — malware analysis report

Static analysis result for SHA-256 819f76c14f390413…

MALICIOUS

PDF

41.6 KB Created: 2020-08-12 11:57:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cc16b51d486385ab7c4c426356742268 SHA-1: 8f6851abd19cb769ae7e675de10438a544b0d17b SHA-256: 819f76c14f3904137a19849156f4d1ed4195fb04b3b6507331b776095e8ccd5a
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. This URL is presented within the document body as a lure for an 'adda247 banking awareness ebook pdf', suggesting a phishing or scam attempt. The presence of a large number of external PDF links, many pointing to Shopify domains, indicates a link farm designed to obscure the malicious destination. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=adda247%20banking%20awareness%20ebook%20pdf In PDF document text
    • http://sipadegu.iedaconnectus.com/uploads/1/3/1/4/131483083/jonebufara.pdfIn PDF document text
    • http://files.mariecharpentier.net/uploads/1/3/1/4/131483019/batipaxadas.pdfIn PDF document text
    • http://files.montreuxatfc.com/uploads/1/3/2/3/132302732/pamofolusu.pdfIn PDF document text
    • http://files.capes4kidsdfw.org/uploads/1/3/2/8/132815752/vaxiduw.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/1/0437/2388/2645/files/wigabafiriwasitemekugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0393/5911/files/joruvorejiwatasitunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/kayla_itsines_bikini_guides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7149/5574/files/ceh_v10_certified_ethical_hacker_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4572/4055/files/40348612479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3359/8880/files/59536788932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/zixatam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0023/3112/files/rebaxoxokivomifogalolorib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8132/5987/files/futelukuvefob.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000598d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x598D 5760 bytes
SHA-256: a1d41f2401583f25476cae1ef1a16a6d51d966da65b022e5d6b042e570b1fe24
font_01_sfnt_off00006d4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4F 1972 bytes
SHA-256: cf0d8fb5527eae19401dfc12654250517e7a38e3cc95ac791bee53c0147e1778
font_02_sfnt_off000076c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76C2 10048 bytes
SHA-256: d1e7ce07ea1a9a9f1b570930a59c973c9147e79105a706448cef69bc45b3ee65

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