Malicious PDF — malware analysis report

Static analysis result for SHA-256 52180cd642c0a563…

MALICIOUS

PDF

77.0 KB Created: 2020-08-07 20:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 226a3e12bf2326a5587751d544918a5e SHA-1: 20eefe60657676f4b17e0de646eb8f4bc17bb440 SHA-256: 52180cd642c0a5632a23938972309e92aba220586eb983516f848ccca0b8d3c3
154 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 'ttraff.com'. This indicates the document is designed to trick users into visiting a malicious site. The PDF also contains a large number of embedded links, many hosted on 'cdn.shopify.com', suggesting a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=cause+and+effect+essay+prompts+pdf
    • http://files.whipperwillridge.com/uploads/1/3/0/7/130739970/gosumumadi.pdf
    • http://files.juditduran.com/uploads/1/3/0/8/130813108/vawozugexojegu-lisosetixil-xanidejopunaf.pdf
    • http://files.getfitz4life.com/uploads/1/3/1/8/131871659/kugiragatutuwibes.pdf
    • http://woboxum.aikidoinstitute.org/uploads/1/3/0/7/130776499/4181993.pdf
    • http://koxanoza.scoopsnaturalfoods.com/uploads/1/3/1/4/131407406/7685724.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/28851780814.pdf
    • https://cdn.shopify.com/s/files/1/0444/0922/5382/files/bhagavad_gita_kannada.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3799/0805/files/marc_loudon_organic_chemistry_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/8462/8633/files/radiwaso.pdf
    • https://cdn.shopify.com/s/files/1/0430/3467/3305/files/xafanulegen.pdf
    • https://cdn.shopify.com/s/files/1/0432/0958/8897/files/fosokinigunubumojumubusak.pdf
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/v_rod_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0453/3475/7531/files/mla_referencing.pdf
    • https://cdn.shopify.com/s/files/1/0429/2512/9891/files/79237966230.pdf
    • https://cdn.shopify.com/s/files/1/0431/1770/7425/files/pilegex.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_off0000ca9e.bin
0eb883767eb4dc63fbdfe5439fcb3db9956252544fc251ab81831cfdcf286c4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA9E 5228 bytes
font_01_sfnt_off0000dc53.bin
0367cad3bc5fa0857caade2c6b1af7da2d73bc7b0eff224151855731d77edeef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC53 11176 bytes
font_02_sfnt_off00010283.bin
bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10283 16312 bytes
font_03_sfnt_off0001180e.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1180E 4324 bytes

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