Malicious PDF — malware analysis report

Static analysis result for SHA-256 1068633c9b244db9…

MALICIOUS

PDF

42.3 KB Created: 2020-09-01 08:25:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dcb8182501f4168ab40e10db7650959b SHA-1: 5f5026d629f596cf36f1429e47e814f46b6601ed SHA-256: 1068633c9b244db95f87f47033a0e8e3631e9d320300b50b5894a16c1f882556
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to a URL that appears to be a link farm for SEO purposes. The embedded URL is presented in a context that suggests a lure related to movie content, likely to entice clicks. While no scripts were extracted, the presence of numerous external links and the malicious redirector strongly indicate an attempt to redirect the user to malicious content.

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.cc/wix?keyword=anaconda+2+movie+tamil+dubbed++hd
    • http://bytlly.com/1d1jd6Us
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/97402520435.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6517/files/cute_babies_pics.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/lulamaj.pdf
    • https://cdn.shopify.com/s/files/1/0436/7866/2809/files/language_hacking_german_benny_lewis.pdf
    • https://cdn.shopify.com/s/files/1/0430/7543/6705/files/rawid.pdf
    • https://cdn.shopify.com/s/files/1/0437/4682/0245/files/14951229675.pdf
    • https://cdn.shopify.com/s/files/1/0432/0732/7899/files/acne_vulgaris_adalah.pdf
    • https://static.usrfiles.com/ugd/db1da1_622fa1200be443928ba8d5d643874981.pdf
    • https://static.usrfiles.com/ugd/b8c837_a6ed77a08ea746e39774dbfc7ea47fd7.pdf
    • https://static.usrfiles.com/ugd/5be868_e6f4325294c441f9808538a603b96b83.pdf
    • https://static.usrfiles.com/ugd/1ee69b_3cca1597efbe4cfc92354270d101e773.pdf
    • https://static.usrfiles.com/ugd/87a178_913128d70fdc4118b07fbc5e2293798a.pdf
    • https://cdn.shopify.com/s/files/1/0439/9818/3582/files/zigebajipuvaretizekisubox.pdf
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/barcelona_metro_zone_map.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_off00006860.bin
a0fe1a9d4e159239673563e18e85aff2e16c4c3388755381b8a02132417dfe27
pdf-font-stream PDF embedded font (sfnt) at offset 0x6860 5224 bytes
font_01_sfnt_off00007a05.bin
ac67c67cee6f960bf4d420dcaa187aa0dd6a518db27cd24db243fd170fa965d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A05 10040 bytes