Malicious PDF — malware analysis report

Static analysis result for SHA-256 065977deacbaa0ed…

MALICIOUS

PDF

37.4 KB Created: 2020-08-19 10:01:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12e6d6a0e6c854d3f2be43e17e57d77b SHA-1: e2a00aa2e7215fb800a853583c3423c8464f16f6 SHA-256: 065977deacbaa0ed957b831656b6cf874e5151b02ec8c7ae591a920db1532ca7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with one pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains the malicious URL and appears to be a lure for SEO poisoning or phishing.

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=syllable+divide+rules+worksheets
    • http://bakaj.jennyharrison-author.com/uploads/1/3/0/8/130814172/c007c.pdf
    • http://bugog.culinaryrogue.com/uploads/1/3/1/4/131453501/2998717.pdf
    • http://patubutiw.rachaelradtkepiano.com/uploads/1/3/1/8/131871745/domevewefexazi.pdf
    • http://files.ndschoolfortheblindfoundation.com/uploads/1/3/1/3/131398336/rixiv.pdf
    • http://gekuk.southerncommunitystudy.org/uploads/1/3/0/7/130739206/xatebesopa-mokosipireje-pilemom-junerosenof.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/46713531507.pdf
    • https://cdn.shopify.com/s/files/1/0454/8486/7736/files/whatsapp_status_video_telugu_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/7048/7712/files/pin_retained_amalgam_restoration.pdf
    • https://cdn.shopify.com/s/files/1/0432/9334/3912/files/nelutedulegola.pdf
    • https://cdn.shopify.com/s/files/1/0430/1268/5977/files/tinigedojuxigebubawuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5612/files/90978683865.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/pastor_chris_oyakhilome_books_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/4356/8278/files/larivonetaxikuvazanat.pdf
    • https://cdn.shopify.com/s/files/1/0432/2846/3271/files/cours_anglais_6me.pdf
    • https://cdn.shopify.com/s/files/1/0439/2583/1835/files/bhagwan_ke_bhajan_kare.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/59574640054.pdf
    • https://cdn.shopify.com/s/files/1/0439/7367/3118/files/nejeno.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/womosoravitixugefiwil.pdf
    • https://cdn.shopify.com/s/files/1/0432/8525/0216/files/43435008532.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_off000053b4.bin
2319fd7748b84173ea690636bb62c8008089803ef873d3553fed8c89bd4025d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53B4 5472 bytes
font_01_sfnt_off00006653.bin
b57a2670f52280ea64d9cc79f4ceb97a6b998a1a816a821581980d1c108ea955		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6653 10020 bytes

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