Malicious PDF — malware analysis report

Static analysis result for SHA-256 688fac22a36162bb…

MALICIOUS

PDF

44.1 KB Created: 2020-08-24 15:59:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a703274dcd3bba0a7f4ad77069f4eac6 SHA-1: 0ce43555634926f69209cc818615860e6578df7c SHA-256: 688fac22a36162bbffa7211aad37f81fc7c7c57538f47d82b1992ab0a9aa9f0d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and a seemingly benign Shopify URL, suggesting a lure for free downloads. The ML classifier strongly indicates maliciousness, and the presence of redirector links points to a phishing or scam attempt.

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=bootstrap+template+for+asp.+net+c%2523 In PDF document text
    • http://kavigak.mivestido.net/uploads/1/3/1/3/131381078/jimanod.pdfIn PDF document text
    • http://lorame.threadscorpuschristi.com/uploads/1/3/0/9/130969352/47eb2ac3.pdfIn PDF document text
    • http://files.whwrestling.com/uploads/1/3/0/8/130873717/tigetozejesevuj-kevoxizolisefug-bofofumuzu-danazinabu.pdfIn PDF document text
    • http://files.perennialplanters.org/uploads/1/3/1/4/131437676/pemamet.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/1/0430/5285/9543/files/91019737986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5676/6869/files/busokotilikepizejeroki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64255738852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2991/4012/files/assizes_of_jerusalem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/tijaranikoroxinaser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/catchphrase_quiz_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5539/0630/files/linear_inequalities_with_two_variables_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3269/9292/files/92853395494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9980/7126/files/68844060575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7266/0390/files/92960228486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3900/6632/files/51325992959.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 7

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_off0000621b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621B 5240 bytes
SHA-256: 12a34e0c26371dcbf88d5a67ec29ee339117f9ee95e67b116c730737245eea1c
font_01_sfnt_off000073e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E2 15320 bytes
SHA-256: 405c73e7c22839a130d9c8691ba989cb62dff26318b6755962ec249262852d0e

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