Malicious PDF — malware analysis report

Static analysis result for SHA-256 5212bbf01c302ebd…

MALICIOUS

PDF

112.6 KB Created: 2020-08-19 05:07:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8a20943deb6936e9874eaf2a1e078be SHA-1: edf7300947bd7566bd5bc1eaa999125df83a1c61 SHA-256: 5212bbf01c302ebdd4645f04871926a1482f16e3f6487e0593d2b787dcf070f4
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link that points to 'ttraff.com', a known malicious domain. The document body, though heavily obfuscated, contains text related to 'Asian cup football 2019 schedule pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links, many pointing to shopify domains, indicates a link farm or SEO poisoning tactic to distribute the malicious URL.

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=asian+cup+football+2019+schedule+pdf
    • http://juxix.alwaysbelisteningglobal.com/uploads/1/3/1/3/131380429/lusenadexeri.pdf
    • http://files.carrouselmuseum.org/uploads/1/3/0/7/130776141/6fed3.pdf
    • http://files.pack87.org/uploads/1/3/1/8/131871416/1274811.pdf
    • http://wetawelu.anti-agingbyrjxjelly.com/uploads/1/3/1/4/131453574/xakiji.pdf
    • http://gopivufe.alexinahicks.com/uploads/1/3/1/4/131406390/921946.pdf
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/management_perinatal_asphyxia.pdf
    • https://cdn.shopify.com/s/files/1/0435/3415/5928/files/11425722452.pdf
    • https://cdn.shopify.com/s/files/1/0452/9088/1185/files/amity_university_online_application_form_last_date.pdf
    • https://cdn.shopify.com/s/files/1/0448/3910/8770/files/abac_air_compressor_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/arabic_words_to_english_translation.pdf
    • https://cdn.shopify.com/s/files/1/0429/0897/5263/files/uk_bribery_act_deutsch.pdf
    • https://cdn.shopify.com/s/files/1/0431/7226/6138/files/76997474699.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5499/files/19841104355.pdf
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/business_management_10th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/17431109379.pdf
    • https://cdn.shopify.com/s/files/1/0435/4683/7151/files/82515505083.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
stream_007_off000187eb.bin
01bf7ad57e9287c2f96471a5be7ebb311dd560b1f234fbb60fcba46c178c6e6e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x187EB 24656 bytes
font_00_sfnt_off000130e4.bin
e079516ca5aa38ffc0e0fa98472267c18861b78cc2ea6cdbcf0bd0a2cf2427eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130E4 5756 bytes
font_01_sfnt_off00014466.bin
33ed6c7f45a890582e801d37ae9489a299d152ea613af2c68336d9d43ee32608		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14466 2464 bytes
font_02_sfnt_off00014e29.bin
9ff1a5e59242e26c7e0377e151b4b1333a61f465860e2ba0da3953a0ced3b56b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14E29 19800 bytes

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