Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa332644bc8338e…

MALICIOUS

PDF

47.9 KB Created: 2020-08-22 12:29:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce810c9ad19f1fb694cd8cec41945803 SHA-1: bcfc6e99b83a0df724e3e44d77fdaddc99684639 SHA-256: eaa332644bc8338ea87aefd04a283cc03b1d8e7bde4c49b7209edbec663ad4e3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a legal document template. This redirector likely leads to further malicious content or exploits. The document also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm or SEO poisoning attempt to improve search engine ranking for malicious content.

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=alternative+dispute+resolution+letter+template
    • http://fenela.eliteedgesss.ca/uploads/1/3/1/4/131407057/pufug.pdf
    • http://mojisiv.nataliemarie.org/uploads/1/3/1/4/131437502/kufixawaro_zopamisire.pdf
    • http://files.northyorkmoorstourism.com/uploads/1/3/2/8/132814067/997fc.pdf
    • http://files.kakoyiannisbricks.com/uploads/1/3/1/3/131380094/nuxuxilalevif_dalisotup_fijajesa.pdf
    • http://files.pattidunne.com/uploads/1/3/0/9/130969764/4934665.pdf
    • https://cdn.shopify.com/s/files/1/0434/0655/7340/files/audit_number_texas_drivers_license.pdf
    • https://cdn.shopify.com/s/files/1/0431/8078/5821/files/51214463187.pdf
    • https://cdn.shopify.com/s/files/1/0434/0439/4661/files/sheet_metal_gauge_chart_australia.pdf
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/ford_fusion_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/5863/3627/files/cell_membrane_structure_and_function.pdf
    • https://cdn.shopify.com/s/files/1/0428/9485/2252/files/dieta_cetogenica_de_50_dias_para_imprimir_en.pdf
    • https://cdn.shopify.com/s/files/1/0433/8850/2174/files/xesokosoruxifofozu.pdf
    • https://cdn.shopify.com/s/files/1/0438/0642/5249/files/48988746391.pdf
    • https://cdn.shopify.com/s/files/1/0433/6589/2245/files/club_car_turf_2_carryall_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/9208/9763/files/ce0168_samsung_tablet.pdf
    • https://cdn.shopify.com/s/files/1/0430/7946/7170/files/bangla_golper_boi_file_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/9376/0931/files/eastern_state_hospital_jobs.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_off00007750.bin
841110e06c11046c81256eb86968bf444fe788799c7b761bfcfa35b6e6b35157		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7750 5156 bytes
font_01_sfnt_off000088be.bin
264cfae27ba4cd4ac5347094017232090d47dd680673def10a70ecea561eb336		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88BE 13012 bytes

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