Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d7fae6c61e140c3…

MALICIOUS

PDF

37.6 KB Created: 2020-08-19 21:08:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1836c4adabb9acb9f190f433b796079b SHA-1: b5abd3b5b7653c03e3b2dc9b2d7e7fabbda0462c SHA-256: 7d7fae6c61e140c3dfd383cffaa607c86a6bd13f99da38a4ce924cde91e53e7d
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a 'Baker Hughes weekly report'. The document also functions as a link farm, pointing to numerous other PDFs hosted on Shopify. The primary malicious intent appears to be redirecting the user to the ttraff.com URL, likely for further malicious activity. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=baker+hughes+weekly+report
    • http://files.thesoftandwild.com/uploads/1/3/2/3/132303083/2545902.pdf
    • http://files.hemlockedgerescue.com/uploads/1/3/1/3/131384656/8298933.pdf
    • http://files.amandaknight-bardsley.com/uploads/1/3/0/7/130775942/6881359.pdf
    • http://ponus.almondblossombreaks.com/uploads/1/3/1/3/131379877/karufupeke.pdf
    • https://cdn.shopify.com/s/files/1/0433/5435/7910/files/tujudetopubopogore.pdf
    • https://cdn.shopify.com/s/files/1/0428/5494/0828/files/coliformes_termotolerantes_definicao.pdf
    • https://cdn.shopify.com/s/files/1/0428/4763/3575/files/english_vocabulary_words_with_telugu_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0433/8103/1064/files/tamadovoduvazawuravul.pdf
    • https://cdn.shopify.com/s/files/1/0429/9315/6259/files/dijov.pdf
    • https://cdn.shopify.com/s/files/1/0430/4565/0586/files/22197902541.pdf
    • https://cdn.shopify.com/s/files/1/0431/6990/6852/files/42039803646.pdf
    • https://cdn.shopify.com/s/files/1/0436/4884/3934/files/83634501389.pdf
    • https://cdn.shopify.com/s/files/1/0438/4279/7730/files/73924430766.pdf
    • https://cdn.shopify.com/s/files/1/0461/1332/5219/files/ncert_history_answers_class_6.pdf
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/rafudiwivovusorudawefajik.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000525a.bin
6a6313b03c8881dec6d03aa561022f55b8dd8936285e569258685a2ccde43a42
pdf-font-stream PDF embedded font (sfnt) at offset 0x525A 5388 bytes
font_01_sfnt_off000064c2.bin
8f6a0ea6f24c0199ca611026f9afbe4d1db03a0f22c5a4457e54027d048b5abf
pdf-font-stream PDF embedded font (sfnt) at offset 0x64C2 10840 bytes