Malicious PDF — malware analysis report

Static analysis result for SHA-256 792c0ad79d77b1f6…

MALICIOUS

PDF

43.5 KB Created: 2020-08-14 07:22:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d97e1e561a19928c9efe3468fdbf4237 SHA-1: 859fcd3437f1704038fc71570fb6d422aa84f7f4 SHA-256: 792c0ad79d77b1f67278f85846f0509ba7aaf1032da1cfdb13e02a507c97a7d7
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which is a common tactic for distributing malware or conducting phishing attacks. The embedded document body text, though partially corrupted, contains keywords related to movie downloads, suggesting a lure to entice users to click the malicious link. The ML classifier strongly flagged this PDF as malicious, further supporting its malicious intent.

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.cc/pify?keyword=baladoor+telugu+movie+hd
    • http://files.architecturebyeuanmiller.com/uploads/1/3/0/7/130739251/naxezevasele.pdf
    • http://files.infiniteaction.net/uploads/1/3/2/7/132712306/vosaka_pubemoxasonelob.pdf
    • http://files.bakersfieldbirthnetwork.com/uploads/1/3/0/7/130775834/fipisoforukovofoko.pdf
    • http://files.sydneybrandingservices.com.au/uploads/1/3/2/3/132303194/147c0c8adc8.pdf
    • http://files.bonnetcatering.com/uploads/1/3/1/8/131857540/908ef7ae4959.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/9575/2858/files/29166615413.pdf
    • https://cdn.shopify.com/s/files/1/0431/1112/1063/files/shadowrun_hong_kong_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/7813/9556/files/67429118518.pdf
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/79215741363.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0503/files/25090586502.pdf
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/monitoring_and_evaluation_definition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9386/9223/files/56019478474.pdf
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/siworileborawituduxamumaf.pdf
    • https://cdn.shopify.com/s/files/1/0450/7333/4424/files/carmilla_libro_completo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005310.bin
29923ce5efd86119ea6232dbae1dc8ebeb4222e24827474c2cedd6c90a32a787		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5310 4948 bytes
font_01_sfnt_off000063e2.bin
a855d4d0c3e54b68856de56bac19beb6eb9840cb3a7e8afd656d5ed7f71a5928		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63E2 2504 bytes
font_02_sfnt_off00006f2d.bin
56f0f8ec60fe87bbd74acc053652ec6f155f88322d13b310044af77e5c509176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2D 10468 bytes
font_03_sfnt_off000092d4.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92D4 4324 bytes

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