Malicious PDF — malware analysis report

Static analysis result for SHA-256 02eac6edd4ac9d95…

MALICIOUS

PDF

47.9 KB Created: 2020-08-30 07:29:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a7df262b828a8c3982a2f9eb6f171f3 SHA-1: cbd435474e6b8adca5018ada9f5161ab90e302d6 SHA-256: 02eac6edd4ac9d95ae3f972dbfce738255ed0dc55e2aa4c98f459457caadc2b1
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a critical heuristic identifying a link to known malicious redirector infrastructure. The primary malicious URL is disguised as a 'Star Wars Empire at War guide'. While no scripts were extracted, the presence of a malicious redirector and a large number of external links suggests an attempt to lead users to malicious content or phishing sites.

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=star+wars+empire+at+war+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0439/1862/2875/files/article_about_inclusive_education_in_the_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0460/0296/2591/files/niwixugidovabodo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/80026785781.pdf
    • https://static.usrfiles.com/ugd/b8c837_18669815a9c24adca17dfa537faffc0d.pdf
    • https://static.usrfiles.com/ugd/ab0441_ae64c3c607c14543b8235ff4e01f9f67.pdf
    • https://static.usrfiles.com/ugd/b8c837_22b63078c113456380a9961e3a46eb28.pdf
    • https://static.usrfiles.com/ugd/0286dd_e61b58afb0f146518ff690b530e7127c.pdf
    • https://static.usrfiles.com/ugd/b8c837_71bf347a23e549af87e1aa222d67113b.pdf
    • https://static.usrfiles.com/ugd/b8c837_2834814971b8414ca577aa28b115deb1.pdf
    • https://static.usrfiles.com/ugd/b8c837_6366f00460ca466b9f98981ffee03785.pdf
    • https://static.usrfiles.com/ugd/b8c837_8f3cfe0583d54cd0b63d2ef6556a1ace.pdf
    • https://static.usrfiles.com/ugd/defcb2_79252aa870bc4c808fd2090dff2f235c.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_off00007edd.bin
fc9a5e8a38f21ddbb8f19469fe2bf064a98919c8085101e9bcad8ebbe722c7ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDD 5444 bytes
font_01_sfnt_off0000914e.bin
febe1114f10f5c4085f0b5d606548cfb8c1c5f11522f4593f00d800bfec3eeef
pdf-font-stream PDF embedded font (sfnt) at offset 0x914E 9844 bytes