Malicious PDF — malware analysis report

Static analysis result for SHA-256 395cafbb74d75112…

MALICIOUS

PDF

56.1 KB Created: 2020-08-28 09:32:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 4bef09dce99d766f9d9e7060f2622c1c SHA-1: 30a5bd8d6c3f1b75853df585244e9fe4054a0a69 SHA-256: 395cafbb74d75112809a7e4795d66f988a2c8e584a20fdb1f92ad959628c1d41
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, contains text related to 'Clicker garage door keypad instructions' and includes the malicious URL. The ML classifier also strongly indicated maliciousness. The primary IOC is the redirector URL, which likely leads to further 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=clicker+garage+door+keypad+instructions In PDF document text
    • http://joliwake.thewellnessbodega.shop/uploads/1/3/2/6/132681670/702b778d6.pdfIn PDF document text
    • http://simewap.dghealthandfitness.com/uploads/1/3/1/0/131071157/vexuwajesejapod-givevelisav-biretatal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/cardinals_injury_report_twitter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2072/1055/files/pdf417_barcode_reader_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6135/4389/files/devos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4870/4920/files/classification_of_plant_pathogenic_fungi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4464/2716/files/4165809199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3292/8671/files/togajoduxabunitozedetoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3802/1531/files/arkansas_cdl_self_certification_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/favubedezemopazejive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2925/0719/files/magezumorijumef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9569/5266/files/witagukinojalolarobagep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/vepixuzexamixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7766/4929/files/37635187090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3576/1576/files/centurylink_dsl_light_red.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76BE 5312 bytes
SHA-256: 5ebc32ce82024a99bb5f5f8a65677db436d99625754348c80abb13cf855bf4b0
font_01_sfnt_off000088d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D9 10688 bytes
SHA-256: 146a748455c2b43b22fab97fcc376fcdf3844d7688cc5acdca6d79ce17e149ab
font_02_sfnt_off0000ace9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACE9 16448 bytes
SHA-256: 05cd78fe7a9d7b8843d5ec83aa6dcfe62b35506b43d7f4dade193614b33ebf77
font_03_sfnt_off0000c2ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2FF 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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