Malicious PDF — malware analysis report

Static analysis result for SHA-256 06e944995d5532f0…

MALICIOUS

PDF

42.6 KB Created: 2020-08-08 02:27:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b19cb838541df0261436fd2b29b7891 SHA-1: b73d1f97a41924b23f2e1425e4b00881e0a50d20 SHA-256: 06e944995d5532f0fdf5f1f44cb968a3b6d36cfd8b92b8d2e3f484fac0996524
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. This suggests the file is designed to lead users to potentially harmful websites or to manipulate search engine results. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=budaya+jawa+barat+pdf
    • http://files.ccamchurch.org/uploads/1/3/1/4/131410479/tilisedeben.pdf
    • http://files.kelsandkel.com/uploads/1/3/0/9/130969448/cbc41fa.pdf
    • http://files.louisashomemades.com/uploads/1/3/1/0/131070895/c7a25.pdf
    • http://files.threeaineconsultancy.com/uploads/1/3/1/0/131070125/587526f65.pdf
    • http://files.priorityenvironmental.ca/uploads/1/3/2/7/132740415/poturowinu-pepurefeme-zomoxiru.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9105/8070/files/rasijagozorikovubodo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/lepus.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/rubberband_man_ti.pdf
    • https://cdn.shopify.com/s/files/1/0430/3339/5353/files/ancient_silver_dragon_5e.pdf
    • https://cdn.shopify.com/s/files/1/0430/6881/7562/files/33068697075.pdf
    • https://cdn.shopify.com/s/files/1/0440/3019/7925/files/book_of_vile_darkness.pdf
    • https://cdn.shopify.com/s/files/1/0428/9573/6988/files/scatter_plot_correlation.pdf
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/strategies_in_teaching_mathematics_in_high_school.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/alphabtisation_numrique.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/livoxigugefeguvon.pdf
    • https://cdn.shopify.com/s/files/1/0433/6097/7048/files/gowuperovuguso.pdf
    • https://cdn.shopify.com/s/files/1/0432/6280/4136/files/60508276331.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_off000068dd.bin
9cc9c81d73ce1a1bf4ffa18d0d0944dbd52109702610c7dc91ba3625bbeac6f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x68DD 5284 bytes
font_01_sfnt_off00007afc.bin
6345dba31b06a80958ddcee334634ef26cfffbe76dbf946e38653425d2958f13
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFC 10268 bytes