Malicious PDF — malware analysis report

Static analysis result for SHA-256 49f6ad719cf1bab6…

MALICIOUS

PDF

46.6 KB Created: 2020-08-24 17:53:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfde8b9c951799cf1f9e829fbc9b65e1 SHA-1: 3a5efe423da1489891a9b7b1d7d439372fe2ca9f SHA-256: 49f6ad719cf1bab6b99ca0359b7039a96d2b568b9c228ffd8d5c7155691c0969
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=lagu+carousel+melanie+martinez'. Additionally, it features a PDF link farm, with the primary link leading to a Shopify URL that appears to be a lure for a 'project acceptance letter'. The ML classifier also strongly flagged this PDF as malicious. The document body contains obfuscated text and the malicious URL.

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=lagu+carousel+melanie+martinez
    • http://files.matesoundthepump.com/uploads/1/3/2/8/132815181/jiwefumuduvunu-kokatul-legupolum.pdf
    • http://bomelef.wrkdojo-lowerhutt.net/uploads/1/3/1/6/131637649/dejebid_kemujanozak_nopibutoriv_webonuma.pdf
    • http://zedutuji.rhodes32.com/uploads/1/3/0/7/130740169/zevekugirowobot-musewo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2631/6455/files/project_acceptance_letter.pdf
    • https://cdn.shopify.com/s/files/1/0454/4541/5070/files/b._f._skinner_verbal_behavior.pdf
    • https://cdn.shopify.com/s/files/1/0433/1628/1512/files/weekly_calendar_template_excel_2019.pdf
    • https://cdn.shopify.com/s/files/1/0431/2963/4970/files/yajur_veda_in_bengali.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/sojew.pdf
    • https://cdn.shopify.com/s/files/1/0429/8299/8170/files/fulanemu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8683/2035/files/48111789715.pdf
    • https://cdn.shopify.com/s/files/1/0437/6847/9893/files/sujad.pdf
    • https://cdn.shopify.com/s/files/1/0431/9608/8481/files/curso_de_ingles_gratis_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0431/1898/5370/files/31153491339.pdf
    • https://cdn.shopify.com/s/files/1/0429/4246/4166/files/47301388123.pdf
    • https://cdn.shopify.com/s/files/1/0428/8711/9007/files/74102322681.pdf
    • https://cdn.shopify.com/s/files/1/0431/3281/3473/files/curtis_lowe_chords.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_off00006e00.bin
bde6a6a885d92e33a1b1244af8b4a0e558d2a18b63648c885173279fad0747fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E00 5112 bytes
font_01_sfnt_off00007f50.bin
7b216d7a2878ff8ec4171c65125e5383d88ca253623a4a56e5fe919db080d7a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F50 2248 bytes
font_02_sfnt_off000089a9.bin
291d4be628dc11eed7a221cdce8e7bf3fac0549711d6f342315489957432d01e
pdf-font-stream PDF embedded font (sfnt) at offset 0x89A9 10372 bytes