Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dac7d72f1a4f864…

MALICIOUS

PDF

41.4 KB Created: 2020-08-02 15:34:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8712d63495b89952af07b7239c3300e SHA-1: bcf39231088758c03ed00aa372b0a1815b9ab9eb SHA-256: 5dac7d72f1a4f8640234248f395d7fc52512d1b741008d2f16ac5b82ba9c927c
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains multiple embedded links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=outlook+express+download'. The document's content and heuristics indicate a lure for payment redirection or changing bank details, a common tactic in business email compromise attacks. The presence of numerous PDF links suggests a link farm or SEO poisoning attempt to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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=outlook+express+download
    • http://files.dogtownpestcontrol.com/uploads/1/3/1/3/131380841/9182656.pdf
    • http://files.shepherdssecurity.com/uploads/1/3/0/7/130775387/2763718.pdf
    • http://files.triadchialpha.org/uploads/1/3/0/8/130874526/2584695.pdf
    • http://files.home4youutah.com/uploads/1/3/0/8/130813025/8bd33885abce1ea.pdf
    • http://files.brushlove.ca/uploads/1/3/1/4/131408256/serefafugekive.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/8017/9107/files/sejidemibatawud.pdf
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/laduweji.pdf
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/tikedarerewemuwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3346/8839/files/74838949982.pdf
    • https://cdn.shopify.com/s/files/1/0434/7052/0470/files/62981730997.pdf
    • https://cdn.shopify.com/s/files/1/0431/5208/1053/files/87678866869.pdf
    • https://cdn.shopify.com/s/files/1/0438/4679/5424/files/ducky_one_2_mini_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/15054760143.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/sitenizuwurepisa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7641/8713/files/26869275775.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/put_on_sunglasses_emoji.pdf
    • https://cdn.shopify.com/s/files/1/0432/0994/9341/files/55318671185.pdf
    • https://cdn.shopify.com/s/files/1/0432/5831/4912/files/86358461415.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_off00006403.bin
52afaa326a31269ab1ced5dd871b19a8a7219e60f82f6a6c6e5065a74e38c6c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6403 5204 bytes
font_01_sfnt_off000075d8.bin
23dbd9e0768909f615c249f69954269d697352f80f2b40af5ccfa581b0442f9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D8 10244 bytes

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