Malicious PDF — malware analysis report

Static analysis result for SHA-256 87ec01e94a53155f…

MALICIOUS

PDF

39.9 KB Created: 2020-08-07 21:44:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0121e7aa8ab9753b79358a60b7b38bfd SHA-1: 3c4c4f70b95ea4ab7ba115c44ccd76c666785596 SHA-256: 87ec01e94a53155f7ea4562a21762cb769d7281455bfea7369e558d3157ba321
202 Risk Score

Malware Insights

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

This PDF file contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.ru/wb?keyword=can%20you%20imbed%20a%20pdf%20into%20excel'. The document body also contains this URL, suggesting it's intended to direct users to malicious infrastructure. The presence of multiple external PDF links and a 'download' button lure further supports a phishing or malware distribution attempt.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=can%20you%20imbed%20a%20pdf%20into%20excel In PDF document text
    • http://files.crossharmony.com/uploads/1/3/0/7/130739651/katigetatitano.pdfIn PDF document text
    • http://files.thevoicesproject.org/uploads/1/3/1/4/131407818/fidabibeno-rutifudunogajuk-xiromom-dexotaponet.pdfIn PDF document text
    • http://files.dfwroofingcompany.net/uploads/1/3/1/8/131856398/78381ec2b4.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/1/0428/9835/8432/files/34707652888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8876/4316/files/subway_fax_order_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4178/1920/files/sipupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/onkyo_firmware_update.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7593/5135/files/kamowalonalisedasif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2089/3851/files/introduction_of_diabetes_mellitus_type_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fofigez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2848/7072/files/17024835860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1118/6585/files/investment_banks_in_pakistan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3034/2806/files/adenite_bacteriana_pediatria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/28106322065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1442/2677/files/gebawuragunefisun.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 2

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_off00005f77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F77 5240 bytes
SHA-256: 7962d1a7fae9acaa115e73ca6df941fea3a12a42b8c66be4bb4c426eebcba537
font_01_sfnt_off00007149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7149 9812 bytes
SHA-256: 4b8cfdfebeb8c3f997c5eba82fe19d8fa751aea714914c384e91c4e5af88400c

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