Malicious PDF — malware analysis report

Static analysis result for SHA-256 b24808f992166f75…

MALICIOUS

PDF

50.1 KB Created: 2020-08-31 21:28:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 648d5e25b0364aa08afab40cb2ac325a SHA-1: bc9aefef28fe71c48f9fa9959c2e90f6d028ad60 SHA-256: b24808f992166f7565a1945e24f197e40962a72c82b601465c147091a4dce341
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'Ebay kleinanzeigen app kostenlos' and includes the malicious URL. This suggests a social engineering lure to trick users into clicking the link, likely to download malware or phish for credentials. The presence of numerous other links, many hosted on Shopify, indicates a link farm strategy.

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=ebay+kleinanzeigen+app+kostenlos In 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/1/0439/4002/0382/files/78970367919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7189/6736/files/concepto_de_servidor_web.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3717/7494/files/vazujijazokexogajatewiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/ranorolaguverokine.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0c268c_9b4ea723c6e04a76b1250111b4f902d2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ab0441_0a4836a7f7ea4961ba0f9588782b9412.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_12120018c73c4e18bcc4a6a855f1e97d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6846fe_757019f0046e4b1f8eefe5822b8c546c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/47b1e8_820baa075182491abb245d76f08da3a6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6710/4664/files/74801728829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1537/0912/files/wegofajapajukob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2990/2998/files/dell_inspiron_3521_cd_rom_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8164/5736/files/bukusaxor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48466687054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2232/7706/files/ataxia_espinocerebelosa_tipo_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/monegudifezunulafofev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0393/5902/files/seminyak_bali_surf_report.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B97 5204 bytes
SHA-256: 9ec8eb6595b8102c81fc6f639859fd22dcd8a84455738a9a556715a040e7a192
font_01_sfnt_off00007d7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7B 11656 bytes
SHA-256: b50683d9fc3e11bfbbb32961a3ff2853c043823931c6d5c01da83b962aec9558
font_02_sfnt_off0000a363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA363 16316 bytes
SHA-256: 43c1ee616dc3be43b5b024fbb240f2c1c65d323ab86308c39a248d24909b890d