Malicious PDF — malware analysis report

Static analysis result for SHA-256 606a67eb8776ba26…

MALICIOUS

PDF

44.2 KB Created: 2020-08-25 00:29:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb91c35d0900a8535c2643c850247db3 SHA-1: 1eca6dee56944bc7069a79882e538f656d40254a SHA-256: 606a67eb8776ba268693c558d7d86f667b2e85ca7a487512b686ac85b0846f68
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one identified as a known malicious redirector. The document body text, though garbled, includes a phrase suggesting a lure for a "birth certificate template word document". The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to potentially harmful sites, likely for phishing or malware distribution.

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=birth+certificate+template+word+document
    • http://files.nakedcityexpress.com/uploads/1/3/0/8/130814235/gerojopegux.pdf
    • http://files.thrivingdrs.com/uploads/1/3/0/7/130776204/5770433.pdf
    • http://files.ocsapso.org/uploads/1/3/1/3/131380596/viwidekob_jolenudu_pijadonebojupan.pdf
    • http://files.nekimastrategies.net/uploads/1/3/2/8/132814589/pojawogos_vojosipalegazu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/3658/0759/files/87780490603.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/bixusitu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3134/7868/files/woleviwirezilovomi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2881/4741/files/15754523894.pdf
    • https://cdn.shopify.com/s/files/1/0434/1897/6408/files/rise_of_the_tomb_raider_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/kufeponelinerapenapajoko.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/wegagizi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/bwv_140_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0429/9902/1717/files/68489016352.pdf
    • https://cdn.shopify.com/s/files/1/0433/0392/7973/files/fegezap.pdf
    • https://cdn.shopify.com/s/files/1/0435/3300/9047/files/barbie_life_in_the_dreamhouse_movie.pdf
    • https://cdn.shopify.com/s/files/1/0435/5588/1115/files/criminal_law_cases_and_materials_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/borderlands_2_save_files.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/58126235884.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_off00006e97.bin
0d01d5cad9a99b32ce4fc5011ecba660a7c716fbfc193ff3d8b5c4b80cc981bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E97 5360 bytes
font_01_sfnt_off000080b8.bin
1a8cf9ea7095c49863fefec6d005e4ccb033f257c0535a8b2635dc4799e3ca42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80B8 10156 bytes

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