Malicious PDF — malware analysis report

Static analysis result for SHA-256 61eec5901dd0a6a7…

MALICIOUS

PDF

40.1 KB Created: 2020-08-05 02:48:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d40fe2189c9e252063ab32a5b8e05dd6 SHA-1: bf802cba77f42ef90cd7e60713e61f58e95118c9 SHA-256: 61eec5901dd0a6a799e56bdbe8be54e8936f97f083649332960bc825aace54ce
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for calendar-related content. The presence of a malicious redirector suggests an attempt to lead the user to a malicious site, likely for further exploitation or credential harvesting.

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.com/pify?keyword=blank+calendar+may+2020+pdf In PDF document text
    • http://files.revitalizeyourself.net/uploads/1/3/1/3/131382395/gowap-nuxize.pdfIn PDF document text
    • http://files.multifaithfest.com/uploads/1/3/1/4/131452815/5453180.pdfIn PDF document text
    • http://files.sydneynewhorizons.org/uploads/1/3/2/7/132710787/lozaratorepu_tatira.pdfIn PDF document text
    • http://files.unityosteo.com/uploads/1/3/0/7/130775263/pefisuxesavusovexiva.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/1/0428/0382/2755/files/40456138223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/34567050384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/1910414941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/govogomezugulimasubegez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/vefutoninuxulupafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/18912362953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9502/3013/files/jquery_1._9_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/fomudosajafafirek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/98082237470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8702/6590/files/numpy_normalize_vector.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 8

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_off00005e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4C 5612 bytes
SHA-256: a11aecd5054684fdd589792a5fb7d775aef62032a1644ccc4e4a3049cd23a44e
font_01_sfnt_off0000715c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x715C 10180 bytes
SHA-256: 51c1e98fc304a8ac635a4fb2372bffba15a9d511883a18f6aaf21094012dbda1

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