Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b7c00d4217e3a29…

MALICIOUS

PDF

48.2 KB Created: 2020-08-08 06:20:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dfb2ab61b16af6e4bfacce05c138d82e SHA-1: f5957f3bf32eee401e0223051e81036a219ea036 SHA-256: 7b7c00d4217e3a29da5f4f330f96acc6c37d5893c75fadd437f63cfb40050a89
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to appear as legitimate downloads but redirect to malicious infrastructure, specifically a redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains the same redirector URL, indicating a clear intent to lure users to malicious content. The presence of numerous external PDF links further suggests a link farm or SEO manipulation tactic to increase visibility of the malicious lure.

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=practice+act+tests+pdf In PDF document text
    • http://files.clarencelam.com/uploads/1/3/1/4/131484328/1908241.pdfIn PDF document text
    • http://files.np2c.co.nz/uploads/1/3/0/7/130739783/02fbf.pdfIn PDF document text
    • http://files.fitnessbyfortitude.com/uploads/1/3/1/4/131437306/jemitusufosuba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/65493472380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5537/2695/files/58644686205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5290/0250/files/17053693511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1538/6774/files/napa_battery_charger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7676/4327/files/67026197256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8947/5237/files/78016747383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9306/4870/files/15968987740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/berukekovikuzaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1855/0439/files/74712201462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/binejuzitixeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0248/6180/files/75565516385.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: clarencelam.com 3 samples

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_off00007272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7272 4688 bytes
SHA-256: ced34869fd92e387222bcf0bace3a00d5fd31d561b0f759b9953ef97ef7c5b13
font_01_sfnt_off0000826e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x826E 10380 bytes
SHA-256: cc947fb9d40f2842b863783a7e91be25b3591a1948ac4461f6e9a57b4130fa03
font_02_sfnt_off0000a5e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5E5 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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