Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fc8fba594bc650f…

MALICIOUS

PDF

41.4 KB Created: 2020-07-29 15:16:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8ac5489a79cc5552f5722209724295c6 SHA-1: 00bf58c315dd73f3e12f5fa955f3bc3c3963d943 SHA-256: 7fc8fba594bc650f592d84874800453465f8b3d57c363bb551a22cdaaa405488
194 Risk Score

Malware Insights

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

The PDF file contains numerous links to a redirector infrastructure, which is indicative of a link farm or phishing campaign. The document body, though heavily obfuscated, suggests a lure related to educational materials. The presence of multiple PDF links, including those pointing to Shopify, further supports the idea of a coordinated effort to distribute malicious content. 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.com/pify?keyword=descriptive+and+limiting+adjectives+worksheet+pdf+grade+2 In PDF document text
    • http://files.lucypetersonwatkins.com/uploads/1/3/1/4/131437689/3eaf072.pdfIn PDF document text
    • http://files.vertriebsautomat.com/uploads/1/3/1/6/131606206/xomusemuzejute.pdfIn PDF document text
    • http://files.nileshagemann.com/uploads/1/3/2/7/132710624/fogabe-pivafamu.pdfIn PDF document text
    • http://files.edenshalefarm.com/uploads/1/3/0/7/130776795/f965683d.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/1/0430/5354/7677/files/surobezesuxufefavafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/53663969609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61047377128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2522/6152/files/puvugik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0972/6870/files/lolaxetuzaninajirujopav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2732/3301/files/51811087614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/jidapaviretomujegepomip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nitupalakisotubawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/gutuvimesasijelomuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0000/2717/files/dajaletij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/vosexibebibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0898/3203/files/sisusagiminifel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/legelawetuloxidig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1604/3168/files/zazikiledela.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_off0000631d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631D 5780 bytes
SHA-256: 559c1cb48397c6223e99369f3ef7940bb4048820e7603b7aeae7ad8aab4fda08
font_01_sfnt_off000076b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B4 9700 bytes
SHA-256: 69e563f5b1d250207acc189ab3aa6c42668377c62182f04119e74db972079558

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