Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef92928bb673afb2…

MALICIOUS

PDF

49.7 KB Created: 2020-08-18 16:19:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b115a2404374017a53f702dce1281a1 SHA-1: 6e05a90d30b06853617d42b4364aaa25ffb7934a SHA-256: ef92928bb673afb2f7fdb5dcaab7ac61ec2c9e9cd7f553d97f8406ea5cfe8a11
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=bubble+shooter+arena'. The document body, though heavily corrupted, contains text fragments and URLs that suggest a lure, possibly related to a game, to entice users to click the malicious link. The presence of a 'download button' heuristic further supports this attack pattern.

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=bubble+shooter+arena
    • http://files.aboundinlove.com/uploads/1/3/0/9/130969748/goserenan-vevuv.pdf
    • http://bowepefiw.centralmathshub.com/uploads/1/3/2/7/132710712/6110066.pdf
    • http://derudebit.mscg19.com/uploads/1/3/1/3/131380771/nazewedora.pdf
    • http://files.relaxandsucceed.net/uploads/1/3/1/6/131637896/7e0d628488ed67.pdf
    • https://cdn.shopify.com/s/files/1/0429/8312/9251/files/dogesumodefizogopeno.pdf
    • https://cdn.shopify.com/s/files/1/0438/5538/0630/files/free_alternative_android_app_store.pdf
    • https://cdn.shopify.com/s/files/1/0430/6393/5129/files/celebrity_endorsement_case_study.pdf
    • https://cdn.shopify.com/s/files/1/0447/7734/1079/files/kusavegakoxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/vuxibiguso.pdf
    • https://cdn.shopify.com/s/files/1/0431/4261/1095/files/cell_cycle_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/wekojekep.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/52306594900.pdf
    • https://cdn.shopify.com/s/files/1/0440/6332/6358/files/71230486430.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/wikosidunusuvugom.pdf
    • https://cdn.shopify.com/s/files/1/0431/9418/7933/files/zudawezoweborode.pdf
    • https://cdn.shopify.com/s/files/1/0435/9880/7202/files/microbiology_in_telugu.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062fa.bin
bd0c46412e9d70c33724bd1c00ffa61c89ee545de9fea2d5654be3d3452b7437		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62FA 4964 bytes
font_01_sfnt_off000073c3.bin
68d006988cae8d53318ebe63c67ad34919f3873b4f484edbc5d032c1b93ba19b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73C3 2448 bytes
font_02_sfnt_off00007ea6.bin
46e819949b40b412838b2934ab7a1b41c68a60bb38d786c9f5394a48fadef65a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA6 10508 bytes
font_03_sfnt_off0000a2c7.bin
a55af39e272d9a75545804fe3a0d54ec4ce0fb5703e2da24269688049f80afda		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2C7 16572 bytes

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