Malicious PDF — malware analysis report

Static analysis result for SHA-256 65970d3d8ad53203…

MALICIOUS

PDF

60.1 KB Created: 2020-08-31 15:31:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7727e88235a807c5332a711f4d3225a1 SHA-1: 9401ab633ecd411a7576d87dcbd9ea4242e3271a SHA-256: 65970d3d8ad532035b06a9ced8bead336de578f99c2cb57ce5d279ce272ba62f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One prominent URL, 'https://ttraff.com/wix?keyword=penny+dreadful+episode+guide+season+1', is flagged as a malicious redirector. This indicates an attempt to direct users to malicious infrastructure, likely for further exploitation or phishing.

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/wix?keyword=penny+dreadful+episode+guide+season+1
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7337/1288/files/susidewapis.pdf
    • https://cdn.shopify.com/s/files/1/0437/1765/6728/files/89602752387.pdf
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/11682898416.pdf
    • https://cdn.shopify.com/s/files/1/0433/7988/4186/files/net_framework_version_1._1_4322.pdf
    • https://cdn.shopify.com/s/files/1/0432/5592/2852/files/mejezibunuralugefopiduli.pdf
    • https://cdn.shopify.com/s/files/1/0439/7039/6318/files/45619478435.pdf
    • https://cdn.shopify.com/s/files/1/0429/6340/2905/files/33629063880.pdf
    • https://cdn.shopify.com/s/files/1/0437/7647/5290/files/fueled_k_bromberg.pdf
    • https://cdn.shopify.com/s/files/1/0430/3178/9721/files/61598671821.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/filsafat_marxisme.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57148414383.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/wugipirixufex.pdf
    • https://cdn.shopify.com/s/files/1/0429/8879/8111/files/video_editor_app_free_android.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_off0000af5a.bin
66c5ebe38762515be8343af9e4621a744c1c6e21ce2ebb8d13c078abe0244b54
pdf-font-stream PDF embedded font (sfnt) at offset 0xAF5A 5364 bytes
font_01_sfnt_off0000c1b8.bin
5c600ffba4fda139be61fc7248f05b79ad6c253f4f7c76bc8b02ab007b5682fe
pdf-font-stream PDF embedded font (sfnt) at offset 0xC1B8 9908 bytes