Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a422e8ee0ed47f…

MALICIOUS

PDF

57.0 KB Created: 2020-08-30 06:14:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d352a1c774275d59ceea494d054154a5 SHA-1: e684060a611fe43f088c86623032b6569d623552 SHA-256: 89a422e8ee0ed47f9c203522c3260a1253a9db15c8f165a3ca266a7ec157fa2c
152 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.com/wix?keyword=manic+miner+download'. The document body text also mentions 'Manic miner download', suggesting a lure to trick users into clicking the malicious link. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector attack pattern.

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/wix?keyword=manic+miner+download
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/18222213963.pdf
    • https://cdn.shopify.com/s/files/1/0434/8405/3669/files/38129490559.pdf
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/bejolukelu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8946/8328/files/metaphorical_thinking.pdf
    • https://cdn.shopify.com/s/files/1/0435/5099/8679/files/suxilutoserozofubowuwamud.pdf
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/2980638869.pdf
    • https://cdn.shopify.com/s/files/1/0429/4197/2636/files/91783164768.pdf
    • https://cdn.shopify.com/s/files/1/0440/1351/9006/files/differential_equations_zill_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0436/8121/8710/files/10326408157.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_e2aa5cb3494d454a8e1610a39b59ae04.pdf
    • https://static.usrfiles.com/ugd/b8c837_d757f9cded0e4b08a6758a3d5a52a81b.pdf
    • https://static.usrfiles.com/ugd/6116da_ca6f1b6ef8ed4a5298fdcfe7b764dd75.pdf
    • https://static.usrfiles.com/ugd/493135_cc901f34b1564125934e1ad55763c67f.pdf
    • https://cdn.shopify.com/s/files/1/0448/4294/2624/files/little_league_schedule_template.pdf
    • https://cdn.shopify.com/s/files/1/0436/1800/9250/files/chava_marathi_kadambari_free_download_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78214852322.pdf
    • https://cdn.shopify.com/s/files/1/0428/9187/0375/files/brushed_font_free.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f8e.bin
ee9b62428d64dce6249ab4806297f67c505bf6c08888ae4e4c0a1580445832af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8E 5004 bytes
font_01_sfnt_off0000907b.bin
6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x907B 1800 bytes
font_02_sfnt_off0000990b.bin
d2e2cc6f743fc0bfff9dc929cf1073163fdab644a25f622d8d1a051ce9e37632		 pdf-font-stream PDF embedded font (sfnt) at offset 0x990B 11732 bytes
font_03_sfnt_off0000c07b.bin
b2563e85233037e3c2780690ed1455257f868516b5a962e54e6ffe29314c9cb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC07B 16312 bytes

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