Malicious PDF — malware analysis report

Static analysis result for SHA-256 11ad1f012053421a…

MALICIOUS

PDF

48.4 KB Created: 2020-08-20 03:43:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 72bdddb7e9f4ad4b41b2d76e6de7e2c2 SHA-1: 3c4368930117a678e8b3466f978d6a94677ab847 SHA-256: 11ad1f012053421aafd09712d7fb4d924a1986e7d3f9a936a0e99fb07526cf47
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on domains associated with link farms and redirectors. The primary redirector URL, 'https://ttraff.cc/pify?keyword=square+root+and+cube+root+practice+worksheets', suggests a phishing or scam attempt disguised as educational 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.cc/pify?keyword=square+root+and+cube+root+practice+worksheets In PDF document text
    • http://vimexarik.dailydigitalclub.net/uploads/1/3/1/4/131407995/0bacb5b9eb7555f.pdfIn PDF document text
    • http://xewavemer.jaxpots.com/uploads/1/3/1/3/131381135/1456045.pdfIn PDF document text
    • http://files.empoweringautismcaregivers.com/uploads/1/3/1/3/131384113/3864971.pdfIn PDF document text
    • http://files.dunphyshandguntraining.com/uploads/1/3/2/6/132681566/d354c601d.pdfIn PDF document text
    • http://junus.boaianimalcentre.org/uploads/1/3/1/6/131606739/8711262.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5920/6561/files/voxupotodigibof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6315/6641/files/supplies_company_profile_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8106/4853/files/mafoluzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6630/2357/files/positive_character_traits.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0490/2045/files/pedakegidurebolofagekam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8849/5270/files/management_of_febrile_neutropenia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4623/0426/files/agronomy_terminology_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9333/5970/files/abnormal_psychology_disorders.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3042/9352/files/lokexejixasakiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7443/7791/files/anti_dumping_measures.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB0 5536 bytes
SHA-256: b7949e6b5f60b4b4763a9beb0f513c19a8cbd05cd6b727594822fa856b845b82
font_01_sfnt_off00006d7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7B 10120 bytes
SHA-256: 5dd0d001883ed82e4d018c11ba22a20b5f4d1ee35f09c2a682586a3f9ac79240
font_02_sfnt_off00009042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9042 16236 bytes
SHA-256: 273914036045da1d397219418389fe67fd6e0f6cf1cb6f4199ca44d81d4651f7
font_03_sfnt_off0000a59d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA59D 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c