Malicious PDF — malware analysis report

Static analysis result for SHA-256 03d74137944ce6b7…

MALICIOUS

PDF

42.4 KB Created: 2020-08-15 05:31:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb53af37b4f7329a5ded9c209e3736f5 SHA-1: a42bdc5112449c01164e951d97cbf98ba847379e SHA-256: 03d74137944ce6b787ae7294fb7666f4cff3fd4617eb0c622a31d33cfc04a645
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=sony+vegas+pro+16+full+free', likely leads to a malicious download or exploit. The presence of a 'download button' heuristic and numerous embedded links further supports the lure-based attack pattern. While no scripts were extracted, the overall structure and malicious link indicate a phishing attempt to trick users into downloading potentially harmful software.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=sony+vegas+pro+16+full+free
    • http://files.angieemilyjoseph.com/uploads/1/3/0/9/130969097/42d0f2324fca.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/2173/6859/files/xuwimepopodowig.pdf
    • https://cdn.shopify.com/s/files/1/0433/5026/1911/files/gitagenesuforovokukesalug.pdf
    • https://cdn.shopify.com/s/files/1/0434/4381/4560/files/gemuvurasovow.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/18067361526.pdf
    • https://cdn.shopify.com/s/files/1/0431/0899/1142/files/vatidisomexirezonusine.pdf
    • https://cdn.shopify.com/s/files/1/0431/6895/6565/files/ejercicios_con_el_abecedario_en_ingles.pdf
    • https://cdn.shopify.com/s/files/1/0433/8447/1710/files/management_des_administrations_publiques_et_territoriales.pdf
    • https://cdn.shopify.com/s/files/1/0431/1557/7504/files/building_blockchain_projects.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/fodedoginugami.pdf
    • https://cdn.shopify.com/s/files/1/0432/7197/9172/files/zoziwumu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6453/2900/files/revenue_recognition_examples.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/maretiru.pdf
    • https://cdn.shopify.com/s/files/1/0433/6510/5814/files/definisi_dermatitis_atopik.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/jejilifugugobe.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_off00005fd8.bin
5211446135d3e1c308fe7dc624076864f9f77c40e379632a9a864dd31639d9d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD8 5540 bytes
font_01_sfnt_off000072d3.bin
6a1faa27c5411753c0f2ad8d6eda3a3085167158cfcae0dc3774ee551f4e2b8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72D3 13212 bytes

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