Malicious PDF — malware analysis report

Static analysis result for SHA-256 6712405d9a7b9c5a…

MALICIOUS

PDF

41.3 KB Created: 2020-08-20 23:53:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01d98f2557330e25369d83f68bbccd61 SHA-1: e01b7935eb4f5cf1240ddc05ef682c79a359fc25 SHA-256: 6712405d9a7b9c5a4235caac6bafaf7c5a25b148ee6c4882dcf4f4ab53ff12cf
162 Risk Score

Malware Insights

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

The PDF contains a link farm with 30 external PDF links, many of which are hosted on Shopify. One of the primary links, presented as a software crack lure, redirects to the malicious URL https://ttraff.com/pify?keyword=vegas+pro+15.+0+crack. This indicates a phishing or malware distribution attempt, likely using the PDF as an initial lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=vegas+pro+15.+0+crack
    • http://files.ohiomorganhorse.com/uploads/1/3/2/6/132682739/zosaramojarilet.pdf
    • http://vidin.auroracbdhemp.com/uploads/1/3/1/4/131407408/segix_ponuxi.pdf
    • http://mobeku.macdesignthinking.com/uploads/1/3/0/8/130873954/242193.pdf
    • http://files.livelikelove.net/uploads/1/3/0/8/130814132/bazetulo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5060/6496/files/how_children_develop_siegler.pdf
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/act_now_domains.pdf
    • https://cdn.shopify.com/s/files/1/0437/8951/6958/files/59167758611.pdf
    • https://cdn.shopify.com/s/files/1/0430/7399/4905/files/adjectives_and_their_opposites.pdf
    • https://cdn.shopify.com/s/files/1/0428/4393/0791/files/823334182.pdf
    • https://cdn.shopify.com/s/files/1/0447/9670/6967/files/26542739223.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/medarovadujagowurevasote.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8770/files/ropug.pdf
    • https://cdn.shopify.com/s/files/1/0448/6791/1842/files/dieta_aumento_de_masa_muscular.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0903/files/adding_integers_word_problems.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/bolijun.pdf
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/55897764896.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_off00005eeb.bin
28f7c5c9c3891d27738fde9fd73877fdf6bf506a7c39e8dd58cbc76e6d9505b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEB 5448 bytes
font_01_sfnt_off0000719b.bin
397a4379f3936ad5ea8ebb6197e1670ef476fc858d48135897c7ba13fb6caa7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x719B 11644 bytes

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