Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d0916393ea5960a…

MALICIOUS

PDF

52.9 KB Created: 2020-08-15 05:08:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b5e3ddbe8a45be2652efc6b13b555ce SHA-1: 503f8c0307378457ae4d6fdd870265166d565bd0 SHA-256: 5d0916393ea5960a75c593d15e805f1125dcdcfc39d425d4441d25437d3ea6f0
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a primary URL pointing to a redirector that appears to be part of a link farm for SEO manipulation. This redirector, 'https://ttraff.ru/pify?keyword=photoshop+cs3+camera+raw+plugin+free', is flagged as malicious and associated with free download lures. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to trick users into downloading software. No scripts were extracted, but the presence of malicious redirector links and the overall structure strongly indicate a phishing or malware distribution attempt.

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.ru/pify?keyword=photoshop+cs3+camera+raw+plugin+free In PDF document text
    • http://files.rdcpcare.com/uploads/1/3/1/1/131163687/belotab.pdfIn PDF document text
    • http://files.childrenscookingclasses.org/uploads/1/3/0/7/130740429/923355.pdfIn PDF document text
    • http://www.opentle.orgIn 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/1/0434/2952/7709/files/87112872414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7473/8581/files/gonujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5588/8022/files/behaviorist_theory_in_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4365/1735/files/lezumukapekuvonelefabibap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6799/7344/files/pdf_to_word_converter_free_with_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8617/6665/files/32630280467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1415/1589/files/goxupolesufuvuxuwok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/ffix_chocobo_hot_and_cold_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1824/8601/files/80607127373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4143/2487/files/20295673115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5586/5242/files/beneath_your_beautiful_sheet_music.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000784a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x784A 7176 bytes
SHA-256: 838946858674012ccd075e5f2c1cd0ef98f003b78e228c251efa91bc7f3a6556
font_00_sfnt_off0000657e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x657E 5568 bytes
SHA-256: abbf65d5b38c42d9f314f9935c391e6857abf035ed68439125eb77f9f4747677
font_02_sfnt_off00008bc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC6 14056 bytes
SHA-256: 8ce59afe4a78d4b31d0318de27795b55395369547796f58e4d64fd7f60a1dc76
font_03_sfnt_off0000b80b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB80B 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230