Malicious PDF — malware analysis report

Static analysis result for SHA-256 7df371c189b40ad9…

MALICIOUS

PDF

46.5 KB Created: 2020-08-15 05:55:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5633d35faa6b1f23cf92d11c64af357c SHA-1: 3fe1650d88e1915b4fd00f90d01f9587bbf89c55 SHA-256: 7df371c189b40ad9b29158ab1723b1931fa92cdf5eed761ce26099fb7374d654
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the PDF is part of a link farm or SEO poisoning scheme designed to drive traffic to malicious sites, potentially for phishing or malware delivery.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/pify?keyword=nara+japan+travel+guide In PDF document text
    • http://files.janethunter.com/uploads/1/3/0/7/130776567/8c1e66ea4035.pdfIn PDF document text
    • http://files.djfndctn.net/uploads/1/3/2/8/132814166/6592140.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/1/0429/5242/5631/files/77615061656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9503/7854/files/33192864495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kusamusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6595/6759/files/19468391921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8286/5047/files/basic_english_dialogues_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/43735466919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5939/4213/files/lulezoledo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/pawejunuzide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/45319774764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4248/7972/files/59389472362.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
🗂 Part of campaign: janethunter.com 6 samples

Related samples 5

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_off00006d20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D20 3836 bytes
SHA-256: a3f17e3af4d8ec1cd4e6f539da80dc119f170211eaa3652cc3e798a988d8a14a
font_01_sfnt_off00007ae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE5 5056 bytes
SHA-256: 26413e9306050daf29a5dc93c29c899bb182c2a033e6e4285706ac830b84e19d
font_02_sfnt_off00008c34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C34 9748 bytes
SHA-256: 368b00e6489d8d3170ecf7de7e48d64ae2fb2dd43b4d04b82f663a25df2fea45

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