Malicious PDF — malware analysis report

Static analysis result for SHA-256 688e1df57cf401c0…

MALICIOUS

PDF

51.8 KB Created: 2020-08-14 16:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0d3df9932ecdec04cc0cf01d5555b86 SHA-1: 97cbee09e71260333bdbacc09cf326781048f5c2 SHA-256: 688e1df57cf401c0370d12726a85ac2c78367879190556bb5f12c39ed49d5fe8
194 Risk Score

Malware Insights

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

The PDF contains multiple links to external resources, including a redirector at 'https://ttraff.cc/pify?keyword=april+2020+calendar+template'. This redirector is flagged as malicious and part of a link farm, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to a calendar template, which serves as a lure. The ML classifier also strongly indicated maliciousness.

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=april+2020+calendar+template In PDF document text
    • http://lafipopu.campbellcounseling.org/uploads/1/3/1/4/131452938/tilenexogiwut.pdfIn PDF document text
    • http://files.antoineauriol.com/uploads/1/3/2/7/132740249/zeniliv_kosixoxebof.pdfIn PDF document text
    • http://rijot.erichhunter.com/uploads/1/3/1/4/131483281/siteridila_jonepa_viromor_fofopewutan.pdfIn PDF document text
    • http://volituvup.sonicblessings.com/uploads/1/3/0/7/130738697/latovikefalodebis.pdfIn PDF document text
    • http://bebizojo.nh-ahn.com/uploads/1/3/1/6/131637027/2237488.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/1/0429/4115/3439/files/98413908267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9550/6592/files/36073164333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/earthbound_beginnings_rom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5266/1912/files/98654774375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7279/0421/files/62766624255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0628/0355/files/vofilusinuselo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/nota_novel_bimasakti_menari_tingkatan_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7339/5101/files/upsc_optional_subject_sociology_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9141/1615/files/19678764365.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_off00008125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8125 5304 bytes
SHA-256: d665a1b36a1f70974f1a54aa012af5343ca463ad074c2fbe0983e676ae90ecf0
font_01_sfnt_off00009305.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9305 15104 bytes
SHA-256: c7910f70cc8a3f06b9abcadcae10a2916de3fd7941f3cf8d37e63a234b6771eb

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