Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e6d3901d244831a…

MALICIOUS

PDF

40.5 KB Created: 2020-09-22 14:12:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad78a4c62fd2a52ac9d3d6a10ba29f63 SHA-1: fc6993eb962c4cc43d584035add97c343be6ffc3 SHA-256: 5e6d3901d244831a777e3c3eba710254c7c1b2f92fddfc009634341167d9b249
154 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to malicious infrastructure, disguised with a lure related to 'the sims mobile unlimited money apk'. The heuristic firings indicate this PDF is a redirector and part of a link farm, suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

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.link/wix?keyword=the+sims+mobile+unlimited+money+apk
    • http://jodaxiw.impulsivelust.com/uploads/1/3/0/8/130814187/dereruna-gesemikevuwo-nevoz-vonomarono.pdf
    • http://namunu.taaonline.org/uploads/1/3/0/7/130739090/vejinifof.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/5554/6517/files/vopaxopoguzadexi.pdf
    • https://cdn.shopify.com/s/files/1/0457/5254/9532/files/naxaxixaxosorejunibak.pdf
    • https://cdn.shopify.com/s/files/1/0458/1408/7846/files/ordem_dos_adjetivos_em_ingles.pdf
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/aseptic_technique_lab_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/lepuwidogodexadezuwesiw.pdf
    • https://b90399b3-c2b3-47db-9eb1-e86864f03435.filesusr.com/ugd/dad90e_042770d991b74c7f9182d8a9a4dc6d08.pdf?index=true
    • https://05b64ae2-eab2-4044-b39a-348c7d4305eb.filesusr.com/ugd/41a0b6_c9bbc475c17d4867be4b8dca886001ee.pdf?index=true
    • https://0f1af885-9ff3-4b3d-8aa6-ae981300cf63.filesusr.com/ugd/b09e1d_85e72794028d4ecf90cc01e50c04ecb2.pdf?index=true
    • https://a06bff4b-86c2-4c88-9d1b-702991a39f76.filesusr.com/ugd/0d9a50_9963a56b48d946b3b25424486c40a0ef.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0435/9458/0136/files/sejarah_akuntansi_internasional.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/76623993070.pdf
    • https://cdn.shopify.com/s/files/1/0433/4711/6185/files/59983001119.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_off00006087.bin
0fd88d710f91562a0f7426c284e0fadbd67838e8c178ea1457a38b9953a78af4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6087 5360 bytes
font_01_sfnt_off0000729a.bin
58ec6e2e849881cac7270e02580b9b05ef2351c8294a06d051022bed5865abdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x729A 10048 bytes

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