Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d8969425bf76635…

MALICIOUS

PDF

43.9 KB Created: 2020-08-09 03:02:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2cd4eb316bf444b603f3856585d1fe3c SHA-1: 97177e8d6a1812e4b172c2cdbda86d48f9c8ef6b SHA-256: 4d8969425bf7663555d0731438a3d10a43170940ed3c139435a6218f503187ee
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a redirector service, which is a common tactic for delivering malware. The document body and heuristics indicate a lure to download a utility, with the primary link leading to a known malicious redirector. The presence of numerous external PDF links suggests an attempt to manipulate search engine results to drive traffic to malicious sites.

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.cc/pify?keyword=split+and+merge+pdf+free+download+for+mac
    • http://megenak.neverleaveonebehind.org/uploads/1/3/1/3/131379312/4571904.pdf
    • http://files.theinnerstrengthlife.com/uploads/1/3/2/7/132741334/wezomaw.pdf
    • http://files.mindedyoga.com/uploads/1/3/1/6/131637014/3266452.pdf
    • http://files.meanbaotoronto.com/uploads/1/3/2/6/132682929/wozuxanekawoxefal.pdf
    • https://cdn.shopify.com/s/files/1/0432/4645/2899/files/lighting_design_in_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/r_markdown_table_of_contents.pdf
    • https://cdn.shopify.com/s/files/1/0432/9593/2584/files/jatojaxenugumipivo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9917/6612/files/bolipuvib.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2821/files/wozukexarig.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/28892482883.pdf
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/xedafunumu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/allotment_planner.pdf
    • https://cdn.shopify.com/s/files/1/0431/5647/1970/files/sindrome_de_abstinencia_drogas.pdf
    • https://cdn.shopify.com/s/files/1/0439/3838/1992/files/69815506412.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gefoviliruvowej.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f72.bin
d773ebcb35b8bd95bb4842d72f4b5ca07e31d7a152578f54fd59efb930483f99
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F72 5280 bytes
font_01_sfnt_off00007156.bin
eb67307e94a72f2e41dc51b48e43b6c8b906d2aeccc22d4688d95ab021b7f5ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x7156 10208 bytes
font_02_sfnt_off00009440.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9440 4324 bytes