Malicious PDF — malware analysis report

Static analysis result for SHA-256 2db127e067ee73b2…

MALICIOUS

PDF

44.1 KB Created: 2020-08-30 08:10:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef9cf848891e180d74c40a1d6df354c3 SHA-1: 0bc3053c2db531cec07d05d2547f3b864d5f7c4e SHA-256: 2db127e067ee73b2fc29df345cee78c80cc99c0c2e35880b304003f03c9bb605
152 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=forcy+download+without+jailbreak'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links to PDF files hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text but includes the same malicious URL and several Shopify URLs, suggesting a lure to a malicious site.

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.ru/wix?keyword=forcy+download+without+jailbreak
    • https://cdn.shopify.com/s/files/1/0437/9557/9029/files/jadafad.pdf
    • https://cdn.shopify.com/s/files/1/0448/9412/6247/files/antimicoticos_sistemicos.pdf
    • https://cdn.shopify.com/s/files/1/0432/2423/6199/files/trane_air_cooled_chiller.pdf
    • https://cdn.shopify.com/s/files/1/0432/8295/6443/files/kofijatesawagel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0189/6347/files/foster_electric_company_limited_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/vadubojawijimelibisipani.pdf
    • https://cdn.shopify.com/s/files/1/0435/5588/1119/files/manualidades_con_cajas_de_carton_de_leche.pdf
    • https://cdn.shopify.com/s/files/1/0433/9410/5509/files/number_color_sheets_free_printables.pdf
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/96557973384.pdf
    • https://cdn.shopify.com/s/files/1/0436/6660/4182/files/http_sites_list.pdf
    • https://cdn.shopify.com/s/files/1/0436/9770/1032/files/jitepabamumabiberiwej.pdf
    • https://cdn.shopify.com/s/files/1/0433/5101/5577/files/authoritative_parenting_styles.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_off00005fdc.bin
16c24cb95382424608af57aefa0c2522dc31d25f6f816b5cf0b0277f366f0249
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDC 5160 bytes
font_01_sfnt_off00007174.bin
69b07c9bdf6836591480ab727523506ed891308a3f0e4ef78158b96190cb72f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7174 10580 bytes
font_02_sfnt_off0000958d.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x958D 4324 bytes