Malicious PDF — malware analysis report

Static analysis result for SHA-256 b65cea81fd41b650…

MALICIOUS

PDF

97.8 KB Created: 2020-08-12 12:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c19b373281610bd3419f66e4e073328c SHA-1: 86814ea6b762dd0135a07ab548869efcbd3b730d SHA-256: b65cea81fd41b650dd4652dd6af6f02372a99faeb0862a14a55635b96f655c77
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a lure for advance-fee scams, specifically mentioning invoices and parcel delivery. The embedded URL `https://ttraff.cc/pify?keyword=working+of+automated+teller+machine+pdf` is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL, reinforcing the malicious intent. The presence of numerous external PDF links, many hosted on Shopify, suggests an attempt to create a link farm for SEO manipulation or to distribute further 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.cc/pify?keyword=working+of+automated+teller+machine+pdf In PDF document text
    • http://nemov.lyrictheatreillinois.com/uploads/1/3/0/7/130775248/2955983.pdfIn PDF document text
    • http://files.emmagardner.com/uploads/1/3/1/0/131069812/muwomenidodobov_gamasosepovowu_tufozaxigip_vujufimiwozi.pdfIn PDF document text
    • http://ripunakez.musicbylily.com/uploads/1/3/1/4/131409090/4929433.pdfIn PDF document text
    • http://files.georgisztojanov.com/uploads/1/3/2/6/132683017/dinokofomepofeg_wokipokitazisiw.pdfIn PDF document text
    • http://files.hazelsnetogo.com/uploads/1/3/1/4/131407737/f931601a.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/1/0435/0767/9387/files/berudadizejejon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4345/4102/files/35973017878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4350/9656/files/database_systems_thomas_connolly_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2331/6630/files/gojikojegorugozise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9456/3221/files/dafud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/split_by_page_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7369/1045/files/git_proxy_settings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1563/4071/files/86811094332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3407/3505/files/delogatepivezomogegawarur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9291/8947/files/86553376467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9542/4165/files/silamifupozep.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001428c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1428C 5468 bytes
SHA-256: eb5188d64a59e34fb79677a6a354ddcf52724bd20e2364ac8988effa43a3fd6d
font_01_sfnt_off00015508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15508 10804 bytes
SHA-256: 3f154b6b38f7064772e9078405fbeadb063e9a13bbe23b1e7db9db5d22448bc8