Malicious PDF — malware analysis report

Static analysis result for SHA-256 6114e486a489aab8…

MALICIOUS

PDF

46.0 KB Created: 2020-08-12 02:13:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48915a6887198b925c8dbb251276160d SHA-1: 62d8879a20fbcd781e732679992099d8fdaead8c SHA-256: 6114e486a489aab855ec45097ce8dff9e5f13f49120d122b3126374a1e8a2bfc
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically `https://ttraff.com/pify?keyword=nematodes+parasitology+pdf`. It also exhibits characteristics of a link farm, with numerous external PDF links. The presence of a 'download button' lure further supports a malicious intent to redirect users to harmful content.

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.com/pify?keyword=nematodes+parasitology+pdf
    • http://gajetes.drrobinkay.org/uploads/1/3/2/3/132303382/72c3b67fcda54.pdf
    • http://files.artemishealingarts.com/uploads/1/3/0/8/130814531/dusag.pdf
    • http://files.birjumaharaj-kalashram.com/uploads/1/3/0/7/130738924/nofugovalawugi_dojizixejiripib_fazafu_gejulugam.pdf
    • http://files.northendoutdoors.com/uploads/1/3/0/7/130739945/raxena.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41877136991.pdf
    • https://cdn.shopify.com/s/files/1/0432/9373/7110/files/centrifugal_compressor_efficiency_calculation.pdf
    • https://cdn.shopify.com/s/files/1/0434/6452/3926/files/puviji.pdf
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/factorial_in_python.pdf
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/klasifikasi_calopogonium_mucunoides.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mabiwabupo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7828/7513/files/jabemesurubu.pdf
    • https://cdn.shopify.com/s/files/1/0443/6181/0076/files/felodidilaromobibug.pdf
    • https://cdn.shopify.com/s/files/1/0436/9442/4232/files/40715234659.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/64228699698.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80170273674.pdf
    • https://cdn.shopify.com/s/files/1/0433/8368/5270/files/zapumudatelumugelesug.pdf
    • https://cdn.shopify.com/s/files/1/0431/6820/2901/files/21433018246.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36726725464.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006077.bin
86150ca366e881c9b08cb98d46bbabaabcd43fdd6750ee16a6815e5cadbdbee4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6077 5432 bytes
font_01_sfnt_off000072ec.bin
bd8e61748297c40efc3005f436c41f2e920959bcd9fd4e997598ec2e3cf4fc07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72EC 10860 bytes
font_02_sfnt_off00009837.bin
6009ef2d2a4e8907718e56e73b254e4dfcfb6e2e78ea0a4e7c61ee9550ad0728		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9837 5124 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.