Malicious PDF — malware analysis report

Static analysis result for SHA-256 f36aaf7b0891e783…

MALICIOUS

PDF

34.3 KB Created: 2020-10-30 01:01:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: ab75e74106c065643accee224f4e071f SHA-1: 3db8a733f8670d2c695e4242cd4cfa598ec43f2a SHA-256: f36aaf7b0891e783e1d2258fbd3d817c436b2c34ad3bf5b9455842575c6f3383
94 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 pointing to 'https://ttraff.com/123?keyword=greater+west+town'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL within the document body indicates an attempt to lure the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/123?keyword=greater+west+town In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387918/normal_5f8fe684a51f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409257/normal_5f9b40db867de.pdfIn PDF document text
    • https://nutolifawivu.weebly.com/uploads/1/3/1/4/131437776/kalugexexedipep.pdfIn PDF document text
    • https://fizolapojola.weebly.com/uploads/1/3/1/3/131383549/giwir.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/xereromejiv-koxozirusoror-moxonujis.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/1/0502/2161/3241/files/83347354898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9980/8149/files/lezzet_dergisi_indir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5394/6782/files/jatajixixe.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/gadikojekexuvusoxobive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7264/6046/files/bulepivorobexotafax.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/723279350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0701/1739/files/gekozifozowoxikugijovub.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4104 4508 bytes
SHA-256: cd6c79560f3fda4a1606497f8e38a36bd39f215053809332e63d042ac75a6198
font_01_sfnt_off00005067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5067 8824 bytes
SHA-256: 2d4e18ad34fdf02d806fe5718af152e3859c1b3eec17debd1808dffc2d62f3bd
font_02_sfnt_off00006e98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E98 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3