Malicious PDF — malware analysis report

Static analysis result for SHA-256 72fce30c299d45a5…

MALICIOUS

PDF

43.3 KB Created: 2020-08-21 11:53:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 08e5822a9624b1cc11c4c96a78ac21f4 SHA-1: 1046b7ba790aee895f77b361b4efc382677defd0 SHA-256: 72fce30c299d45a5f805b12ddb081406339260ccfb6e638dc12e0bc12a3090d4
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a lure for 'glencoe health chapter 20 test answers'. The primary malicious URL identified is https://ttraff.cc/pify?keyword=glencoe+health+chapter+20+test+answers, which is likely used to redirect victims to a phishing or malware-hosting site. The presence of many Shopify links suggests an attempt to blend in with legitimate content.

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=glencoe+health+chapter+20+test+answers In PDF document text
    • http://files.cottagegrovefire.org/uploads/1/3/0/7/130775249/0cd7cd5eaa4398a.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/1/0428/6310/0070/files/lifeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9004/3287/files/competitive_programming_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/87597212780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2756/1634/files/30280693117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8155/5350/files/android_textview_bold_not_working.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8909/1998/files/86020703182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9697/7051/files/21198642550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4529/8074/files/soduxumulodowuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7342/8890/files/61181688237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/4130922211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/9109568511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7196/3296/files/mudumeri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/44482658896.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 1

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_off00006928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6928 5420 bytes
SHA-256: dd1b6d50b5f1657a7e0d742a435a92239a0369a1408df7091c0848bf006c48d2
font_01_sfnt_off00007b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B99 10860 bytes
SHA-256: cc34b7fcb85e9b4239c7bb894281d69f61e06c97daff8857c4d5e5c035c26ad7

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