Malicious PDF — malware analysis report

Static analysis result for SHA-256 7452499b1af67025…

MALICIOUS

PDF

42.3 KB Created: 2020-08-30 16:17:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb89cbd748791bbc465868ee59466a33 SHA-1: a59eef4ffe9729490dac170790e55e623b133510 SHA-256: 7452499b1af67025f8981a890b8f2a326e5f8e1c585ace523ecb288f0d6a92cb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, with one identified as a malicious redirector. The presence of numerous links to external PDFs suggests a link farm or SEO manipulation tactic, potentially leading to malicious content distribution. No scripts were extracted from this sample.

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.club/wix?keyword=thori%2527dal+the+stars%2527+fury
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/6416/3490/files/kakejogerimela.pdf
    • https://cdn.shopify.com/s/files/1/0436/5362/8062/files/38034029899.pdf
    • https://cdn.shopify.com/s/files/1/0434/0655/7345/files/agronomic_biofortification.pdf
    • https://static.usrfiles.com/ugd/b8c837_06726444992e4d47ac4fef5d33b314e5.pdf
    • https://static.usrfiles.com/ugd/9ec29b_af83a2ddf6724493a01482d0d629b006.pdf
    • https://static.usrfiles.com/ugd/8b97dd_f8337e4e8b544b1ba085756fe410ee61.pdf
    • https://static.usrfiles.com/ugd/ab059d_e08fb8a54259405ea6707048dc1c1c4f.pdf
    • https://static.usrfiles.com/ugd/b8c837_472b0cba763d46308803ba4754990508.pdf
    • https://static.usrfiles.com/ugd/784815_0a9328d04e2e46eb94627b83fd3ab794.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f98010e7f1a449c86d15ffb029b3a66.pdf
    • https://static.usrfiles.com/ugd/76156b_6a271ba56a42497c8514fee4bd8db752.pdf
    • https://cdn.shopify.com/s/files/1/0431/3150/2749/files/wikora.pdf
    • https://cdn.shopify.com/s/files/1/0437/2771/6520/files/articulaciones_del_craneo_y_cara.pdf
    • https://cdn.shopify.com/s/files/1/0435/2786/4469/files/brawl_stars_private_server_free_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/2825/8726/files/philips_slimstyle_led.pdf
    • https://cdn.shopify.com/s/files/1/0431/8507/8423/files/53072767784.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_off00006708.bin
c4e5465d233901d99b8cbd8f6794539e83c6bf51e4330fe853ab7629a1aaaf8c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6708 5080 bytes
font_01_sfnt_off00007858.bin
32797bbcebb4abbc6cfb07ae33eb92c7988b55dd0523fb748d862677f3df2ab2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7858 10524 bytes