Malicious PDF — malware analysis report

Static analysis result for SHA-256 0218b83ae720a129…

MALICIOUS

PDF

37.9 KB Created: 2020-08-25 23:44:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: efcf6c5a66ec2d04673db1ec1b6dd24d SHA-1: b77394c46d67c85dba807cab5aee71d25b049370 SHA-256: 0218b83ae720a129cdaf8bbc8f5e4a6606138ccd37eb75595fb31ef0bc4772eb
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.club, which is likely intended to lead the user to a malicious site or download. The document body, though heavily obfuscated, contains the same URL and other URLs that appear to be part of a link farm, suggesting a SEO-based lure. The ML classifier also strongly indicated maliciousness.

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.club/pify?keyword=the+pineal+gland%253A+the+eye+of+god+pdf
    • http://binavir.sciencemra.com/uploads/1/3/0/9/130969536/9843829e0.pdf
    • http://xugid.gsjacobsen.com/uploads/1/3/2/3/132302868/supezo-zozatam.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/9494/1603/files/ronamubixuserusutijox.pdf
    • https://cdn.shopify.com/s/files/1/0440/6778/2821/files/toxakevodigiji.pdf
    • https://cdn.shopify.com/s/files/1/0440/6630/8246/files/sifebekapelosodasod.pdf
    • https://cdn.shopify.com/s/files/1/0449/2810/6651/files/accord_de_l_auxiliaire_avoir_et_tre.pdf
    • https://cdn.shopify.com/s/files/1/0434/3362/3708/files/94878649094.pdf
    • https://cdn.shopify.com/s/files/1/0432/3033/1047/files/85703627850.pdf
    • https://cdn.shopify.com/s/files/1/0431/0935/1575/files/word_label_template_avery_5162.pdf
    • https://cdn.shopify.com/s/files/1/0435/8540/5089/files/download_bhagavad_gita_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/7403/5607/files/38615907267.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_off0000550b.bin
b5603c230aeac912a1346827a63b66f0030cb63f7b8f68f81e99a05a4b71d89e
pdf-font-stream PDF embedded font (sfnt) at offset 0x550B 5128 bytes
font_01_sfnt_off00006687.bin
fa0abb89b22b25a51d442f2b157ce025855261a07a3724e4dd514709af4b4837
pdf-font-stream PDF embedded font (sfnt) at offset 0x6687 10248 bytes