Malicious PDF — malware analysis report

Static analysis result for SHA-256 11274340b272dd94…

MALICIOUS

PDF

44.9 KB Created: 2020-08-31 10:32:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f135eb769db289f63519182157ae8c2 SHA-1: 398c8b72cc6317890924460335c7070cb763add6 SHA-256: 11274340b272dd94021e4d449bb918b79fc5027b2e56eb3f067d340a98ed1fa8
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, masquerading as a movie download lure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifies the primary malicious URL. The ML classifier also strongly indicated maliciousness, supporting the assessment of a phishing or redirection attack.

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.ru/wix?keyword=jungle+book+2016+full+movie+in+hindi
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/4071/0566/files/porexitosorokok.pdf
    • https://cdn.shopify.com/s/files/1/0464/5525/9304/files/61645492544.pdf
    • https://cdn.shopify.com/s/files/1/0461/1617/6036/files/adobe_acrobat_dc_keygen.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/gcefcu_online_banking.pdf
    • https://static.usrfiles.com/ugd/bb13a2_b2ed9a2cb26c407d80ba048ddac5f23a.pdf
    • https://cdn.shopify.com/s/files/1/0437/5448/7957/files/24410457837.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/13406601152.pdf
    • https://cdn.shopify.com/s/files/1/0432/7286/3899/files/17583785252.pdf
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/wizozivanivujofaselumovo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9489/1943/files/naxigatokoj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006399.bin
6c2acdae21efd86306832227311b1f7978d0ca15aeb08a55eebae6845098cb46
pdf-font-stream PDF embedded font (sfnt) at offset 0x6399 5372 bytes
font_01_sfnt_off000075c2.bin
54a0c68e8b16e7d33babf754b375c5c5a4788c6f45f73a71418a4ee4a3b6e9e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x75C2 10412 bytes
font_02_sfnt_off0000990a.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x990A 4324 bytes