Malicious PDF — malware analysis report

Static analysis result for SHA-256 47eed7cb750654c8…

MALICIOUS

PDF

51.1 KB Created: 2020-07-30 20:41:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa042e32bbb35c5261f834f994345a6e SHA-1: a94195486ea56f4cc3914a575fb6bae5ef9d8238 SHA-256: 47eed7cb750654c87108c3e35f914a17aa2c6c6b78be9113a3a6e0b0e7b04612
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious link directs to a known redirector infrastructure. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting the analysis of direct execution behavior.

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=understand+culture+society+and+politics+pdf
    • http://files.rachellecherie.com/uploads/1/3/0/7/130740033/mefinakat_guvanifu_widenimokipev.pdf
    • http://files.atouchofalchemytampa.com/uploads/1/3/2/7/132740838/befd9b587.pdf
    • http://files.designhireenjoy.com.au/uploads/1/3/1/8/131856158/6988609.pdf
    • http://files.ciremaitrail.com/uploads/1/3/1/6/131606411/lotiwadarizovur_badewifu.pdf
    • http://files.thedigitaldogpound.com/uploads/1/3/0/9/130969674/veresuwatujiduv.pdf
    • http://files.thedigita
    • https://cdn.shopify.com/s/files/1/0431/1177/6416/files/viviputinedu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0067/5995/files/23273475100.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/12577375258.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tovunegorudakumuwi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2846/3271/files/10526213258.pdf
    • https://cdn.shopify.com/s/files/1/0432/3871/9648/files/87112042407.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4547/files/41767930554.pdf
    • https://cdn.shopify.com/s/files/1/0429/6212/4959/files/81583570288.pdf
    • https://cdn.shopify.com/s/files/1/0433/4904/9499/files/xuxowutosikuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/5192/6183/files/gasalagezudotuzevi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/xolisukemebepofodegapor.pdf
    • https://cdn.shopify.com/s/files/1/0429/7667/3946/files/65158978508.pdf
    • https://cdn.shopify.com/s/files/1/0429/1349/7251/files/towenaduzobaferulavipu.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_off0000893f.bin
43c0e4cdc177846c3ce83baee7a3676fa4ef9181e052ec478fb0fa15d83ff172		 pdf-font-stream PDF embedded font (sfnt) at offset 0x893F 5124 bytes
font_01_sfnt_off00009abe.bin
323915f81879ab8e031e78060469246d76a3d49e3d6b17a5f8fee1870a7a71aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ABE 10472 bytes

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