Malicious PDF — malware analysis report

Static analysis result for SHA-256 79ef69b7d3317467…

MALICIOUS

PDF

46.1 KB Created: 2020-09-16 14:44:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02c134434ec031e6fd4523b87eeef1cd SHA-1: e88ebf1f2b21ccc22fe5e0c9ce2f63bfd8477a98 SHA-256: 79ef69b7d331746701d09057bc41d323339e2ab11400e53f55a6602336b5d2f0
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to a redirector service, suggesting a link farm or phishing lure. The primary redirector URL is https://ttraff.club/wix?keyword=multiplying+polynomials+coloring+activity+worksheet+answer+key+aliens+pdf, which is designed to trick users into downloading further malicious content. The ML classifier 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.club/wix?keyword=multiplying+polynomials+coloring+activity+worksheet+answer+key+aliens+pdf In PDF document text
    • http://daliwize.nazhomeschoolers.org/uploads/1/3/1/0/131071258/60c4eb.pdfIn PDF document text
    • http://files.elementalascension.com/uploads/1/3/1/4/131437953/gawogilopog.pdfIn PDF document text
    • http://files.thedinopark.com/uploads/1/3/2/7/132740415/6535022.pdfIn PDF document text
    • http://files.beverleycigarstore.com/uploads/1/3/0/9/130969403/dovonaxevesewog.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://aeacac57-82f6-48db-af0c-cd17eb07d15a.filesusr.com/ugd/3225da_acae7881031c4761a38d917cd0a42052.pdf?index=trueIn PDF document text
    • https://52723aca-1f9f-4ce4-a509-bef15311c9c0.filesusr.com/ugd/dc8a8e_231ee2051782473cae3d82fcbaad5b44.pdf?index=trueIn PDF document text
    • https://dbd3c9c0-900a-4830-9e8a-e2f526370b1e.filesusr.com/ugd/6f5f23_6afaaf19dbd34e149235ecb7f7b9a5ab.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7320/7446/files/fishing_report_brigantine_nj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7587/1654/files/94258787447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2158/9913/files/86488334162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6955/4344/files/macroeconomics_20th_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4017/7314/files/borderlands_the_pre_sequel_trophy_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5491/3950/files/59217321222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8606/2495/files/engineering_drawing_question_and_answer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6148/6503/files/happy_wheels_mod_apk_download_android_1.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B4 5776 bytes
SHA-256: 2b614eb305c98fa57339948373294fec81cc4f7d4c8d2f1da10ec2686e56905c
font_01_sfnt_off00007946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7946 10228 bytes
SHA-256: f6742dcb854c937899d000392306aabab013d9530c5815e71241fa3ec438d1db
font_02_sfnt_off00009c5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C5C 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c