Malicious PDF — malware analysis report

Static analysis result for SHA-256 903dd2c3103885ec…

MALICIOUS

PDF

47.6 KB Created: 2020-08-11 06:09:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7ec2295ed3803dfb4db756335244dc8 SHA-1: 9db3c715a9a5e9a0c271bb1be4cb174e0819abd5 SHA-256: 903dd2c3103885ecc202727ba72971fd985544d168ca992e966d37d89b5e2862
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector URL pointing to 'https://ttraff.ru/pify?keyword=arduino+sensor+projects+pdf'. This indicates a phishing or scam attempt designed to lure users to malicious infrastructure. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=arduino+sensor+projects+pdf
    • http://files.thecabinetart.com/uploads/1/3/1/3/131384791/buwuditutisax.pdf
    • http://files.vahidjahandari.com/uploads/1/3/1/6/131637606/fakomobozipera_xidexukabebu.pdf
    • http://files.gotchacostumes.com/uploads/1/3/0/9/130969879/wusave_varev_ziwalenapiwutap_tagovudixijil.pdf
    • http://files.sociablyquaint.com/uploads/1/3/0/8/130873738/7166d3f5548d4.pdf
    • http://files.nourishandflourish.site/uploads/1/3/1/8/131871606/cf4fb8c0c301933.pdf
    • https://cdn.shopify.com/s/files/1/0430/8792/1313/files/govuferaxidabawabinurodu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3365514284.pdf
    • https://cdn.shopify.com/s/files/1/0437/3122/2689/files/ansys_workbench_19.pdf
    • https://cdn.shopify.com/s/files/1/0428/5657/9228/files/85170320144.pdf
    • https://cdn.shopify.com/s/files/1/0435/9903/6573/files/bakowakazenub.pdf
    • https://cdn.shopify.com/s/files/1/0432/5471/0427/files/astable_multivibrator.pdf
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/75431674088.pdf
    • https://cdn.shopify.com/s/files/1/0434/0695/0550/files/june_july_august_2020_calendar_printable.pdf
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/latimifakojakono.pdf
    • https://cdn.shopify.com/s/files/1/0437/4793/4359/files/adonais_poem.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/manga_de_sword_art_online.pdf
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/josigavubazoselefevenev.pdf
    • https://cdn.shopify.com/s/files/1/0437/6766/0706/files/91556984791.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000684a.bin
c66fcef6015e0b9376c8a44af43fb8eaaa62ee4dc930c02085c2ca31d7043d06
pdf-font-stream PDF embedded font (sfnt) at offset 0x684A 4856 bytes
font_01_sfnt_off000078d8.bin
3ba19f37e9d3806d672596a67db3d05d89f46938ee98fb458e94b8593865f414
pdf-font-stream PDF embedded font (sfnt) at offset 0x78D8 13764 bytes
font_02_sfnt_off0000a366.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0xA366 4324 bytes