Malicious PDF — malware analysis report

Static analysis result for SHA-256 eccd92019279d39e…

MALICIOUS

PDF

48.1 KB Created: 2020-10-09 02:15:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 81b925c1c26e0f4ef01d50d9ce43f275 SHA-1: 3d243b8f0568a7a09f4e28148c479f164fccdf12 SHA-256: eccd92019279d39e891158b50742b68874c1f073904bbc958fb0e94b3af2b4b3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to a link farm designed to generate SEO traffic. One prominent link redirects to a malicious infrastructure at 'ttraff.ru', disguised as a resource for 'dnd 5e battle maps'. The ML classifier strongly indicates malicious intent, likely to redirect users to malicious content or phishing sites.

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/pify?keyword=dnd+5e+battle+maps In PDF document text
    • https://site-1039570.mozfiles.com/files/1039570/kuneberur.pdfIn PDF document text
    • https://site-1036861.mozfiles.com/files/1036861/simodotutibegerud.pdfIn PDF document text
    • https://site-1036760.mozfiles.com/files/1036760/97844109385.pdfIn PDF document text
    • http://files.friendscarvingclub.org/uploads/1/3/0/8/130874043/wadizi_lekemazomuji.pdfIn PDF document text
    • http://files.lifesmysticaljourney.com/uploads/1/3/1/4/131437834/8a4c2e0cde022.pdfIn PDF document text
    • http://files.elliottsaslow.com/uploads/1/3/2/6/132682905/zixogugo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1198/3528/files/cobalt_ss_for_sale_in_pa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/6271/3256/files/loch_raven_reservoir_closed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9175/8756/files/sally_mann_immediate_family.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9264/9132/files/trig_function_identities_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9015/7474/files/nato_article_5_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3473/3465/files/pride_and_prejudice_novel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8519/6183/files/am_conservation_group_package.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/9611/4847/files/gun_script_roblox_pastebin_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/6377/1804/files/world_of_tanks_blitz_hack_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5571/7279/files/cedar_lake_mn_fishing.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71FE 4904 bytes
SHA-256: 614f5f00985541f44f77d893eb2f91d085787082c718e8b2ead510d386c4401d
font_01_sfnt_off0000828a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828A 10324 bytes
SHA-256: 3260b230e5d7875142fe5740f31605a7123b89e697fdc0ffab9778de47e3462d
font_02_sfnt_off0000a5c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5C3 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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