Malicious PDF — malware analysis report

Static analysis result for SHA-256 eece5fea62d835c8…

MALICIOUS

PDF

45.4 KB Created: 2020-08-21 09:12:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8898edfaf8b32965ee012fe5f52416e SHA-1: 37d16ca8e95dd69ae2db346d0cffd62d171a7ba6 SHA-256: eece5fea62d835c86079086683d489973e0d7ac69ba5d5db14fc88df51b10398
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as a download button, which is a common lure for phishing and malware delivery. The document body, though heavily obfuscated, contains the malicious URL. The presence of numerous external PDF links suggests a link farm or SEO poisoning attempt to increase visibility.

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.
  • 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
  • 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=android+oreo+minimum+requirements
    • http://suveza.cakelaine.com/uploads/1/3/1/3/131380600/kuzirufux.pdf
    • http://files.vlsss.com/uploads/1/3/1/1/131163969/pagotedupej-xipil-vipaxesopifenun-jetotam.pdf
    • http://furulider.cevavb.org/uploads/1/3/1/4/131406082/125463.pdf
    • https://cdn.shopify.com/s/files/1/0437/0805/5720/files/sda_bible_study_topics.pdf
    • https://cdn.shopify.com/s/files/1/0428/6713/0534/files/392302098.pdf
    • https://cdn.shopify.com/s/files/1/0433/0881/0398/files/aptitude_questions_for_interview_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/9885/7891/files/molaferuzefe.pdf
    • https://cdn.shopify.com/s/files/1/0436/5362/8062/files/22420844325.pdf
    • https://cdn.shopify.com/s/files/1/0432/3255/9267/files/xabuxurokupilor.pdf
    • https://cdn.shopify.com/s/files/1/0450/9194/6661/files/29404713533.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vibuzos.pdf
    • https://cdn.shopify.com/s/files/1/0430/3690/1527/files/duwomofugixugolumebegiwo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3222/files/93772342514.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_off000073d5.bin
16703c487c27640355128d861b12d3376ce55e156b69e57d79522683be9267aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73D5 4844 bytes
font_01_sfnt_off0000842d.bin
a8fe6f239efbc04d9943b004e266abc54db3aae33f6715879acb544416492c14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x842D 10652 bytes

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