Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd2ffc7500ef9c76…

MALICIOUS

PDF

61.3 KB Created: 2020-07-26 02:43:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-07
MD5: 5bec0ef21664a029ba2d970a49535646 SHA-1: 425c457aff8d8c10c469e08a2b03c1b44bfd857d SHA-256: dd2ffc7500ef9c762f03e7016e588db8f48178275cb00684c62338a1d4ae59db
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but also includes a critical link to a known malicious redirector at 'ttraff.com'. This indicates a likely attempt to redirect users to malicious content or phishing pages. The heuristic firings confirm the presence of a malicious redirector link and a link farm, suggesting a coordinated effort to drive traffic to potentially harmful sites.

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/wb?keyword=english%20corpus%20linguistics%20an%20introduction%20pdf In PDF document text
    • http://files.ari2extensions.com/uploads/1/3/2/6/132695472/zikubukojawowufeg.pdfIn PDF document text
    • http://files.amandaleightonphoto.com/uploads/1/3/1/4/131437018/mefidijiponut.pdfIn PDF document text
    • http://files.ruirosalab.com/uploads/1/3/0/8/130874672/8104804.pdfIn PDF document text
    • http://files.winetruffleboutique.com/uploads/1/3/0/8/130874110/teregede.pdfIn PDF document text
    • http://files.karensteward.com/uploads/1/3/0/7/130776484/6020f9e.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/1/0429/6281/3084/files/kefadedexolubevadiwoguf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/60285872701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/xavapawif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1238/2116/files/webanetiferaloz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/90820267541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7809/0901/files/dobina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96056065099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9769/4114/files/88316931588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8013/7369/files/16766057030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0657/files/gejizajulowuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0764/7639/files/6154881028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1425/7815/files/dinizelopula.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_off0000b31c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB31C 5140 bytes
SHA-256: 4b634126d3609c6356ca131544664b79c8033d61ba7ece837d2ab230cc80191a
font_01_sfnt_off0000c483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC483 10440 bytes
SHA-256: e06b8940a72b1c3562fb37ca85df9e923a71d97d97b52c8270dfb6c4f7ed8b72

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