Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3f704ab9c66f7a5…

MALICIOUS

PDF

53.6 KB Created: 2020-09-18 03:43:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f694014b84dea6067819845c2c54fa66 SHA-1: c0d9b1e12322cb6e3d81a1c2e4b6139a64cf74ce SHA-256: f3f704ab9c66f7a531c5b9cd521b5b2f03122c7ae950e67a3273b450a4517d8c
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to SEO-optimized PDF files hosted on various domains. One prominent link redirects to a malicious infrastructure at 'https://ttraff.link/wix?keyword=sith+raid+guide'. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests a drive-by download or phishing attempt to direct users to potentially harmful content. 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.link/wix?keyword=sith+raid+guide
    • http://dewipo.healthandjustice.site/uploads/1/3/0/7/130776750/pezuj_tamixol_tizafexoruvaga.pdf
    • http://files.chrisbracebuilders.com/uploads/1/3/0/7/130739742/javevutefi_buzel_puwazizudofuso.pdf
    • http://dukewajo.shannonsstudio.com/uploads/1/3/2/6/132683292/9128695.pdf
    • http://files.sharmellebeauty.net/uploads/1/3/0/9/130969360/tozumirazokolus_lizowa_xovuwipodonixa.pdf
    • http://pafola.mindfulnessforeveryone.com/uploads/1/3/1/4/131453501/livudeb.pdf
    • http://boxopexi.dhollowayeducation.com/uploads/1/3/0/9/130969139/110f605611a9d.pdf
    • http://files.christinafriedle.com/uploads/1/3/2/6/132682230/dufekugumuw.pdf
    • http://darutu.ksasteel.com/uploads/1/3/1/0/131071256/58dcc27.pdf
    • http://wawezimap.scoutparis.com/uploads/1/3/2/7/132710780/c4b9b8.pdf
    • https://a8420077-e374-4f1d-9827-4f308c0a9c9a.filesusr.com/ugd/04e6f9_c41de70a536e4644a5517e7b01662230.pdf?index=true
    • https://3c4fa970-0902-4827-83ad-2717aa111a92.filesusr.com/ugd/0c268c_eb1c5cbfe49745dea46d4d8a6c9603c7.pdf?index=true
    • https://27c3e8c7-0806-43dd-ac9c-01486aca61d7.filesusr.com/ugd/003b86_0e56f6d3f3fe49b9917c837e7d16db96.pdf?index=true
    • https://303d7633-a2ec-49f3-8f1b-d6b6899949a2.filesusr.com/ugd/7ab50f_8bf98c4a188b4f82ad6c916ebd56457b.pdf?index=true
    • https://33622fd9-9927-409e-b05c-e39a3e1fc0e0.filesusr.com/ugd/c2bf0a_376faa04ca4a4714bc8945994724404d.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0427/7665/8087/files/ringo_madlingozi_sondela_album.pdf
    • https://cdn.shopify.com/s/files/1/0432/7093/0600/files/jovolusepot.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/cisco_ise_2._0_installation_guide_vmware.pdf
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/69927385505.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_off00009419.bin
97fda7891addbebca45ae962529035575734ecb24718ae87c4336c0ebf82011f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9419 4980 bytes
font_01_sfnt_off0000a500.bin
a2a248d716f11627d49bcd663108e6feed2d402f1deb0f2f97faf629b133e2a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA500 10744 bytes

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