Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbfecbb41fc36cea…

MALICIOUS

PDF

134.6 KB Created: 2020-08-02 21:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3bfee784a2ddc0513314b6a768f3378d SHA-1: 28344e11a6c1b27d2eec30c86edbcbb0de9d7208 SHA-256: dbfecbb41fc36cea6920ef3e3c4543ab9a3f5e813212578eb7ac46d4dd70fb91
234 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the string 'Walking dead minecraft servers' and the malicious URL 'https://ttraff.cc/pify?keyword=walking+dead+minecraft+servers'. This suggests a lure to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://ttraff.cc/pify?keyword=walking+dead+minecraft+servers.
  • 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=walking+dead+minecraft+servers In PDF document text
    • http://files.empiricfashion.com/uploads/1/3/0/7/130775714/3194623.pdfIn PDF document text
    • http://files.lawpoa.com/uploads/1/3/0/8/130873769/1660504.pdfIn PDF document text
    • http://files.halalinjapan.com/uploads/1/3/1/3/131379420/xexikadodo.pdfIn PDF document text
    • http://files.titaniumflower.com/uploads/1/3/1/8/131872273/3a9c04851d8.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/1/0428/7997/5590/files/39206030593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/60584246431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5308/6885/files/madojorasawoleleluxudafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1555/2674/files/rpg_programming_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/dewejolopize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3394/2423/files/32844241812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3547/4590/files/dugezev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8185/8214/files/lumejonufafuzafuladip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudogezemolajefenupil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7217/5784/files/37323330804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0313/4627/files/xevugodidukilupele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9070/6589/files/24988990539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5926/3141/files/63844871495.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001c2d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C2D7 4956 bytes
SHA-256: 8688d8ca7fc71f3a1c32e21c0b8040e8cde9c6c92251eb10e240644cb4ca7f4b
font_01_sfnt_off0001d3ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D3FF 5476 bytes
SHA-256: 8363bc951f6fa149ea3cabbcfe8c74a0f52995a2f79cfc0f0935d953c7e5f224
font_02_sfnt_off0001e6a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E6A1 11080 bytes
SHA-256: ca8fd773fe99a468714f8a43331bf246f6f553413ca673c0394e0def77613973