Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0824285186917e8…

MALICIOUS

PDF

48.1 KB Created: 2020-08-30 21:08:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ecc0a17ee8cfa7ea60d0a0c8a4ce41bf SHA-1: 981f6071bd7d049a7c117e489c7b139377aaefad SHA-256: e0824285186917e8bc1504ebdf09d178a9bec15d3657169e936ae42ede73b15d
154 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.com', identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Praxis 5001 practice test' and includes the malicious URL, suggesting a social engineering lure. The presence of numerous other PDF links, many pointing to Shopify, indicates a link farm strategy, likely to obscure the primary malicious destination. The ML classifier strongly flagged this PDF as malicious.

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/wix?keyword=praxis+5001+practice+test
    • https://cdn.shopify.com/s/files/1/0440/2295/6197/files/procesal_civil_y_mercantil_guatemala.pdf
    • https://cdn.shopify.com/s/files/1/0433/3702/3656/files/electrical_certificate_of_compliance.pdf
    • https://cdn.shopify.com/s/files/1/0431/0253/5840/files/aung_san_suu_kyi_books_free.pdf
    • https://static.usrfiles.com/ugd/50c35f_a30e0e5becc1460a82ce9d68fd479405.pdf
    • https://static.usrfiles.com/ugd/822ecd_e9a0fa6190c242bf87beeb8a48cce3ff.pdf
    • https://static.usrfiles.com/ugd/2ac701_4c3df67a366d4c53a7c5df381799c4c7.pdf
    • https://static.usrfiles.com/ugd/4117a9_bd379f3f72134c30868c29b8391b4509.pdf
    • https://static.usrfiles.com/ugd/9b5f63_72322ceadb354ccda2681d7f787b1be2.pdf
    • https://cdn.shopify.com/s/files/1/0428/9508/1625/files/aircraft_wing_structure.pdf
    • https://cdn.shopify.com/s/files/1/0440/4399/3238/files/lenofovu.pdf
    • https://cdn.shopify.com/s/files/1/0460/9182/9412/files/29130657637.pdf
    • https://cdn.shopify.com/s/files/1/0431/5296/5792/files/48650765836.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/75635403754.pdf
    • https://cdn.shopify.com/s/files/1/0448/2249/5389/files/fusionner_plusieurs_en_un_seul_fichier.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_off00006921.bin
32e84837fedd9cd95a8281a02570daa58bfebdf19f0bd81ef3acacd88b2deb1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6921 5280 bytes
font_01_sfnt_off00007b25.bin
3d08965822f0e2a6ba0fde78fb6ffb756baa692066e5ce9557f602378c7628df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B25 10432 bytes
font_02_sfnt_off00009efc.bin
35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EFC 16036 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.