Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0a83b195933e5e7…

MALICIOUS

PDF

65.1 KB Created: 2020-08-09 00:02:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cc4c9b26705d461fbd06ae7715579e6 SHA-1: fd1c92d647f1b47bcb14866fdda7c85d794c5dd0 SHA-256: a0a83b195933e5e74175ff433a747c6dc2b58fbd00e276d4e3e52afbb17bf48c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=pengertian+adversity+quotient+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF title, suggesting a lure to a malicious site.

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=pengertian+adversity+quotient+pdf
    • http://files.tonysconstructioninc.com/uploads/1/3/2/6/132681885/wolipapaga.pdf
    • http://files.healthymamahappymama.com/uploads/1/3/1/4/131437862/wofiwesit.pdf
    • http://files.magicmudceramics.com/uploads/1/3/0/9/130969003/fuzegikepamilu.pdf
    • http://files.markkarsten.com/uploads/1/3/0/7/130774962/rutilunixovib.pdf
    • https://cdn.shopify.com/s/files/1/0432/3475/4728/files/vumuriwu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/86477918810.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/totavari.pdf
    • https://cdn.shopify.com/s/files/1/0447/3297/3205/files/muslim_baby_names_with_meaning_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0439/7475/4462/files/glosario_de_epidemiologia_veterinaria.pdf
    • https://cdn.shopify.com/s/files/1/0432/2610/3971/files/10182997642.pdf
    • https://cdn.shopify.com/s/files/1/0429/5049/2316/files/90075974610.pdf
    • https://cdn.shopify.com/s/files/1/0431/2704/6301/files/acid_base_chemistry_10th_notes.pdf
    • https://cdn.shopify.com/s/files/1/0439/6879/0686/files/zexuwirovavoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/57393687508.pdf
    • https://cdn.shopify.com/s/files/1/0436/0732/6882/files/sewesaduremolakojokoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/vulupazi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/17483585598.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_off00006b70.bin
c7e71dcd18f49ce0326b785ab670fed8bab929abb83ccb20346ec6a1fee6fcbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B70 20600 bytes
font_01_sfnt_off0000ac94.bin
a5b77ff523571a37deaf2d910d1ae4293b0001febe8dccd15b0a20a5d1c49c50		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC94 5468 bytes
font_02_sfnt_off0000bf43.bin
45ae547879df3d44f13f4c39108e379a0dabb548431fe04c3310cc19aa8cc9a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF43 10144 bytes
font_03_sfnt_off0000e23f.bin
52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE23F 16036 bytes

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