Malicious PDF — malware analysis report

Static analysis result for SHA-256 000a6f67cfffb3fd…

MALICIOUS

PDF

43.2 KB Created: 2020-08-22 01:14:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5fa412c699d661366ad3c074bac098b SHA-1: 4e4dd1cff1afab73eb30c818a6f5d2e51d0c5c45 SHA-256: 000a6f67cfffb3fdd70216e01941709f4f0f5c40b075c1b8177d7b00c7e0933d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF document contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure related to 'Assassin's Creed Unity APK', likely intended to trick users into downloading malware. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=assassin%2527+s+creed+unity+apk+real
    • http://joxax.eddielandsberg.com/uploads/1/3/2/6/132681946/vexawavope-rasexetex-muxerugexumov.pdf
    • http://nozufowo.ashlandkitchenevents.com/uploads/1/3/1/0/131069934/basapuvo.pdf
    • http://kudelu.fpdinternational.com/uploads/1/3/1/3/131398140/7609343.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://cdn.shopify.com/s/files/1/0430/4021/1097/files/24798719206.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/definition_and_characteristics_of_research.pdf
    • https://cdn.shopify.com/s/files/1/0439/1629/6360/files/93307927538.pdf
    • https://cdn.shopify.com/s/files/1/0449/3908/3944/files/power_electronics_mcqs_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/19128943704.pdf
    • https://cdn.shopify.com/s/files/1/0436/9799/5941/files/edit_documents_freeware.pdf
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/60478368433.pdf
    • https://cdn.shopify.com/s/files/1/0430/6327/9767/files/tepes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80789229335.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
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000547d.bin
7ba10aeef19350a1d1bb8ae39897a136cc99fb92fb2a375a5f665d89cd3289c3
pdf-font-stream PDF embedded font (sfnt) at offset 0x547D 5256 bytes
font_01_sfnt_off00006667.bin
fd3469d85deae16901aebdede4ee471cb05553ec5e1430f599c8995f803a4b20
pdf-font-stream PDF embedded font (sfnt) at offset 0x6667 7072 bytes
font_02_sfnt_off00007975.bin
76c8de3920107d326afaf9db53deae1ea5e4040750baf2a30d08441aa1e8c9a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7975 10716 bytes