Malicious PDF — malware analysis report

Static analysis result for SHA-256 5df982a41bbcb543…

MALICIOUS

PDF

43.3 KB Created: 2020-08-15 03:19:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce8420a6117463ecf8b4766adc9914a2 SHA-1: 41a84862ac8b5d8866e5c66708514f44d0904ac8 SHA-256: 5df982a41bbcb5436b89fa98cbb5c247c5412db585cbc741f7a5594723b2e07a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, masquerading as an annual report, to a redirector URL. The primary malicious URL identified is https://ttraff.com/pify?keyword=louvre+hotels+group+annual+report, which is flagged as malicious. The document also contains a large number of links to Shopify-hosted PDFs, suggesting a link farm or SEO manipulation tactic. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=louvre+hotels+group+annual+report
    • http://webuvoton.tucklessshirts.com/uploads/1/3/0/7/130776106/ferufovekow.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/80700216463.pdf
    • https://cdn.shopify.com/s/files/1/0429/9443/4207/files/computer_chapter_1_internet_class_10_notes.pdf
    • https://cdn.shopify.com/s/files/1/0440/4461/5830/files/pepukoxelimuputubesokamob.pdf
    • https://cdn.shopify.com/s/files/1/0438/2290/7554/files/xugokikuzeburote.pdf
    • https://cdn.shopify.com/s/files/1/0439/6302/3518/files/tuniw.pdf
    • https://cdn.shopify.com/s/files/1/0434/5449/6935/files/acquisitions_incorporated_tg.pdf
    • https://cdn.shopify.com/s/files/1/0429/0176/6310/files/nafokeloxazositaveju.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/59378661023.pdf
    • https://cdn.shopify.com/s/files/1/0431/0794/2549/files/rexerenizegurinonoxuzosu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4012/files/17294982012.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5499/files/aws_certified_solutions_architect_blueprint.pdf
    • https://cdn.shopify.com/s/files/1/0437/4901/5701/files/32431929836.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lonub.pdf
    • https://cdn.shopify.com/s/files/1/0440/2679/0053/files/dipopis.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ba7.bin
4961680d8f254086df5d938b9e821ab17a1e5f29fa42ab321f2c83f91f0b9012
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA7 5084 bytes
font_01_sfnt_off00007cfa.bin
a20f8711059e51c119b8b3b519ecc004144040450f52367548c5e69fa87ea338
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFA 10228 bytes