Malicious PDF — malware analysis report

Static analysis result for SHA-256 be3bb577ca99ba61…

MALICIOUS

PDF

55.6 KB Created: 2020-08-22 02:08:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb4b9309046e1c3dc6ddd2676794ba2a SHA-1: 3719b60d7d37f54d7f5a1cc7b9db10a178629c4f SHA-256: be3bb577ca99ba612125641800e034a863d948c69b0677908b422ab4f06040b9
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a large number of embedded links, many of which point to external PDFs, a common tactic for SEO poisoning and distributing malicious content. One prominent URL, 'https://ttraff.ru/pify?keyword=baldi%2527+s+basics+apk+mod+menu+v3', is flagged as a malicious redirector. The document body, though partially corrupted, mentions 'Baldi's basics apk mod menu v3', suggesting a lure to trick users into downloading potentially harmful software. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or redirection attack.

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=baldi%2527+s+basics+apk+mod+menu+v3
    • http://pekoxo.tallsycamorecampground.com/uploads/1/3/1/4/131407233/nasotomosofalo.pdf
    • http://files.angeldreamsquiltshop.com/uploads/1/3/1/6/131607075/kapowaja_pododisugu_vozizomikivota_jumugojana.pdf
    • http://files.reliablealliancefinancialllc.com/uploads/1/3/0/9/130969079/956b1fc0ad89e22.pdf
    • http://sefum.mcfiltration.com/uploads/1/3/0/7/130739860/e8d591.pdf
    • https://cdn.shopify.com/s/files/1/0429/9702/2871/files/anticorit_77.pdf
    • https://cdn.shopify.com/s/files/1/0429/2666/9987/files/29922839428.pdf
    • https://cdn.shopify.com/s/files/1/0433/8368/5270/files/25160786107.pdf
    • https://cdn.shopify.com/s/files/1/0435/5339/0743/files/analysis_of_algorithm_mcqs.pdf
    • https://cdn.shopify.com/s/files/1/0432/0886/8001/files/kotimaxalonozulu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1350/5185/files/lanolunibifijaguvuxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/1532/3291/files/cisco_packet_tracer_6_free_crack.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tipibag.pdf
    • https://cdn.shopify.com/s/files/1/0448/2249/5389/files/ngo_bylaws_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/6151/8231/files/96630125556.pdf
    • https://cdn.shopify.com/s/files/1/0439/3356/5096/files/kuzonume.pdf
    • https://cdn.shopify.com/s/files/1/0441/4459/1000/files/bulk_sms_sender_v2._0.pdf
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/matapipozosadaga.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_off00007480.bin
1f53629deb7b543baeb95ea419daa03ba2cc33a099266d7016d2a1b215029bb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7480 5436 bytes
font_01_sfnt_off000086e3.bin
ccb5dece4310f021f3d4cea52bebdccde0f3b1352f1dc6362cfc3f00ed722656		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86E3 10472 bytes
font_02_sfnt_off0000aaf8.bin
d5ade8dd65067c511114aa0a4d97cf5f201da26cf63f08282ba3cba14db0e436		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAF8 16424 bytes
font_03_sfnt_off0000c0f0.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0F0 4324 bytes

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