Malicious PDF — malware analysis report

Static analysis result for SHA-256 99982d9375c5e6f9…

MALICIOUS

PDF

42.1 KB Created: 2020-08-14 06:48:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e567ebbf459023084f1f2038aceaa8e4 SHA-1: 9b7161d7ca5158462620931b54277b667214cdd6 SHA-256: 99982d9375c5e6f95aef3f6ed4b76d9cb103f815d673656bd08942df49c9a0ad
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.com'. The document body, though partially corrupted, includes the text 'Arabian adventure 1979 full movie' and the URL 'https://ttraff.com/pify?keyword=arabian+adventure+1979+full+movie', suggesting a lure to potentially malicious content. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent to drive traffic to external sites.

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.com/pify?keyword=arabian+adventure+1979+full+movie
    • http://files.lalearningacademy.com/uploads/1/3/0/8/130814101/tutamibuwifijix_sosujebo_dapub.pdf
    • http://files.darakutawp.org/uploads/1/3/2/7/132740978/7627976.pdf
    • http://zemewe.theadventuresofwu.com/uploads/1/3/1/8/131857334/8174265.pdf
    • http://files.historywithcoachd.com/uploads/1/3/1/3/131379325/kamajewalene.pdf
    • http://files.bcdiscsports.com/uploads/1/3/0/9/130970009/e8215c595.pdf
    • https://cdn.shopify.com/s/files/1/0440/5755/9190/files/3916766931.pdf
    • https://cdn.shopify.com/s/files/1/0437/5999/2990/files/tempstar_furnace_parts.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16779745642.pdf
    • https://cdn.shopify.com/s/files/1/0435/6522/0003/files/43307847165.pdf
    • https://cdn.shopify.com/s/files/1/0432/3219/8816/files/mams_mall_job_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0438/6455/5675/files/molij.pdf
    • https://cdn.shopify.com/s/files/1/0434/3591/7464/files/www_puzzlemaker_discoveryeducation_com.pdf
    • https://cdn.shopify.com/s/files/1/0439/5086/6590/files/disewerevosapumavolomiboj.pdf
    • https://cdn.shopify.com/s/files/1/0428/8829/8659/files/1739345370.pdf
    • https://cdn.shopify.com/s/files/1/0434/4184/8470/files/hable_como_en_ted_carmine_gallo_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0434/5557/8273/files/zilobalexafugaku.pdf
    • https://cdn.shopify.com/s/files/1/0435/8170/2303/files/38648370987.pdf
    • https://cdn.shopify.com/s/files/1/0432/7096/3366/files/54896248108.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000619a.bin
3130d5a3025d01d6d19a277402c074cc8dd46f415730e459dc6541cedc33efa8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x619A 5352 bytes
font_01_sfnt_off000073cc.bin
a7267d4f196f47fdf25dd4144dd75e5398b676166e444e20b20e628cb9dbf301		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73CC 11788 bytes

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