Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0b5c2d53c7d65e8…

MALICIOUS

PDF

41.3 KB Created: 2020-08-25 01:52:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9d380c6a8cef311c2b9636ea7288a937 SHA-1: be00fd2e8299deffeae7204ec39ec8638a10b487 SHA-256: c0b5c2d53c7d65e8a8cfce93edb09071dd70b1d68544944e1a9e284e3f209969
162 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to ttraff.cc, which is known malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'free coreldraw x5 portable' and the malicious URL, suggesting a lure for users seeking pirated software. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the PDF's structure and embedded links are sufficient to infer a malicious redirection attack.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=free++coreldraw+x5+portable+32+bit In PDF document text
    • http://files.sanfrancisco-interactivehypnotherapy.com/uploads/1/3/1/3/131384559/eade2.pdfIn PDF document text
    • http://kaxore.deepspaceobjects.com/uploads/1/3/1/4/131452903/9a7e098d5d1a16.pdfIn PDF document text
    • http://files.idontdrink.net/uploads/1/3/1/4/131453174/227363.pdfIn PDF document text
    • http://files.erikharmens.com/uploads/1/3/1/4/131407144/5631300.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/1/0440/7489/3477/files/85432196623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5975/7727/files/toefl_ibt_integrated_writing_topics_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6169/8969/files/51453451356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9963/4326/files/best_android_mobile_phones_below_10000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2122/8440/files/24631820219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3450/7426/files/geographical_information_systems_and_remote_sensing_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9624/3364/files/yorehab_tag_price_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/96258101311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/jepisuwafenuxokowovisode.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000615f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615F 5564 bytes
SHA-256: f1faf400052a74e00e68b8648c2869dd19eee866594d9d371fa5af5a9c3f9b04
font_01_sfnt_off00007471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7471 10604 bytes
SHA-256: cb6c645ef94036a4ce5df23eeae80c6e5a4cc40ad5eb363e08623ea471ab27b0

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