Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ee94f4d29b45ead…

MALICIOUS

PDF

44.4 KB Created: 2020-08-22 08:56:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e73e02544b78ac05201d9f5b32b69fbf SHA-1: a52702ac9dafb55d1f4ec555cddaf10fc9aaaa7f SHA-256: 5ee94f4d29b45ead39bbc4c2bd9ff710292180ec2b1e1d2b458b0398f8b600b1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=eclipse+for+java+64+bit+windows', is flagged as a malicious redirector. The document body also contains this URL, suggesting it's the primary lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious destination. No scripts were extracted, but the PDF structure and malicious link strongly suggest an attempt to redirect the user to a malicious site.

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=eclipse+for+java+64+bit+windows
    • http://files.prdmta.org/uploads/1/3/1/4/131454098/bofevisaxi.pdf
    • http://pokero.acadefenders.org/uploads/1/3/0/8/130874276/sumawibife_deziruridogaju_toxagewodupe.pdf
    • http://rawozeref.debbieyoung.co.uk/uploads/1/3/1/4/131406798/8193974.pdf
    • http://files.fullmoonontheriver.com/uploads/1/3/1/4/131411197/ponit-samek.pdf
    • http://files.johnhoma.com/uploads/1/3/1/4/131407144/8321852.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0455/3352/8229/files/felenemadasal.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/school_subjects_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/6590/9160/files/binomische_formeln_erklrung.pdf
    • https://cdn.shopify.com/s/files/1/0430/8569/3079/files/c_programming_basics_in_tamil_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/2532/5465/files/sakugosevubilobi.pdf
    • https://cdn.shopify.com/s/files/1/0436/3576/9497/files/90757220832.pdf
    • https://cdn.shopify.com/s/files/1/0435/4310/1591/files/vawazebudube.pdf
    • https://cdn.shopify.com/s/files/1/0448/9333/9803/files/noetic_effects_of_sin.pdf
    • https://cdn.shopify.com/s/files/1/0431/5434/2044/files/21546231823.pdf
    • https://cdn.shopify.com/s/files/1/0435/2809/3850/files/fuzilisunesebavanifoda.pdf
    • https://cdn.shopify.com/s/files/1/0446/2444/5603/files/black_friday_movie_hd.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/93075334450.pdf
    • https://cdn.shopify.com/s/files/1/0447/4303/2983/files/aashto_code.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006abd.bin
0d06081679c53479437dfd4d3ad15a2313362b886837bf9cab3b2ee0524dee8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABD 5716 bytes
font_01_sfnt_off00007e51.bin
cd6fa507b3b167048db768c2a309a1bebe53056b05ff9ba9ce6b392a0b227062		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E51 11512 bytes

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