Malicious PDF — malware analysis report

Static analysis result for SHA-256 220319b45a11c66d…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 10:20:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 21392a2642b3b6e0941cda365895a043 SHA-1: f12340c7d706a05a62ba0acdf9f8064c37e73ffd SHA-256: 220319b45a11c66d0cd18ad0afc7e7710bc9c69a23e8f86b7732595eb9a04ade
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector at `ttraff.com`. The document body, though heavily obfuscated, contains text related to a 'football manager' guide and the malicious URL, suggesting a lure for phishing or malware delivery. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm further supports malicious intent.

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.com/pify?keyword=football+manager+2018+dortmund+guide
    • http://files.journeys4life.com/uploads/1/3/1/4/131437981/bb3edb2419c88c.pdf
    • http://xetige.westwoodfive.com/uploads/1/3/2/3/132302815/lexalij_jogiguvoz.pdf
    • http://muvesuta.unveiled-ministries.org/uploads/1/3/2/7/132712615/suzovabomasa.pdf
    • http://files.bostonironsides.org/uploads/1/3/1/4/131438071/mopemadomupop-nuvigunerozo.pdf
    • http://files.orchidbakery.co.uk/uploads/1/3/0/7/130775134/nebulafume_wimebibivozer.pdf
    • https://cdn.shopify.com/s/files/1/0431/1633/1172/files/rixubojuful.pdf
    • https://cdn.shopify.com/s/files/1/0429/5639/0559/files/wijibovo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3887/4532/files/37317387202.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/discord_ascii_art.pdf
    • https://cdn.shopify.com/s/files/1/0430/1189/9551/files/mobegipiwetemon.pdf
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/92073767922.pdf
    • https://cdn.shopify.com/s/files/1/0436/7374/7609/files/27830226893.pdf
    • https://cdn.shopify.com/s/files/1/0435/8776/4387/files/91089435256.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4711/files/konufewileletum.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/software_to_convert_to_editable_word_document_free_download.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aab.bin
65216d17e0f44c379bfa0ef5a0d24e5ce034fa8b4ad065eaaab8edd1a308e30d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAB 5580 bytes
font_01_sfnt_off00007d88.bin
0dbde623fd296b0422a17a65e3bdc815f94b4ad869d948e3e1fe38f508a3f96c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D88 10300 bytes