Malicious PDF — malware analysis report

Static analysis result for SHA-256 06963feb5c8d7a5a…

MALICIOUS

PDF

51.6 KB Created: 2020-08-22 18:47:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e7ddfc6881fea83449b8253f913d166 SHA-1: f01d2593756260433d3b245b4bd59653150702c6 SHA-256: 06963feb5c8d7a5ad5327603c6b7c186eba3bc33badd4ab247c9079cd3eb6048
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are hosted on Shopify and appear to be part of a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though partially corrupted, contains the URL that triggered the redirector heuristic, suggesting an attempt to disguise malicious activity as a search result for software. No scripts were extracted, but the presence of numerous external links and the malicious redirector strongly indicate a phishing or malware distribution attempt.

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=crystal+reports+runtime+2008+windows+10
    • http://files.linhightower.com/uploads/1/3/1/4/131453022/bulibonovezulap.pdf
    • http://vopofaket.penultimatephotos.com/uploads/1/3/0/9/130969264/kuxijapufidugoj-jomawizakog-zejejegekizudi-setobu.pdf
    • http://files.rachelcookcopywriter.com/uploads/1/3/1/4/131454109/8109267.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/cameraman_gangatho_rambabu_movie_scenes.pdf
    • https://cdn.shopify.com/s/files/1/0433/6772/7269/files/english_brushup_5th_edition_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0436/0781/8398/files/aadhar_card_mobile_number_change_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/7818/0257/files/bakixezuditidoxixed.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/vanilla_twilight_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0434/7992/4893/files/buwafazefodufalimazem.pdf
    • https://cdn.shopify.com/s/files/1/0437/3970/9605/files/valupukulujige.pdf
    • https://cdn.shopify.com/s/files/1/0434/5567/6583/files/22676163717.pdf
    • https://cdn.shopify.com/s/files/1/0432/0631/2093/files/markdown_for_discord.pdf
    • https://cdn.shopify.com/s/files/1/0432/6604/8164/files/amtrak_california_zephyr_route_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6895/6565/files/33695808825.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/schma_d_une_cellule_vgtale.pdf
    • https://cdn.shopify.com/s/files/1/0440/5339/7654/files/anexo_14_oaci_volumen_1.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070d9.bin
64c70d78e5c57bda9917ef844608d3974c56cefa25be20bce02ae4e775bc0001		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D9 6676 bytes
font_01_sfnt_off0000875e.bin
523ffb867f5e1970a9ff7acc909f5cba5c6149906ca13b2cac2d2a43aaad8cf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x875E 5724 bytes
font_02_sfnt_off00009adb.bin
a81c292ff1a77fee73ff302f269c95b9f495a288ea993fa89ded42b62977ae32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ADB 11300 bytes

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