Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae790306d675ea8c…

MALICIOUS

PDF

37.1 KB Created: 2020-08-07 17:21:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 935c7ee60348457aa5a0d7f20b3193be SHA-1: 15d02e814318de6936f058f2b125c5b00601ee40 SHA-256: ae790306d675ea8c7ee514a1b95736507a0ab076337cde6ed188921ddd634819
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text fragments related to 'news' and 'download', and the heuristic firings indicate a malicious redirector and a link farm. The presence of a 'download button' heuristic further supports the lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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=sandesh+news+baroda+pdf+download In PDF document text
    • http://files.thesummiteauclaire.com/uploads/1/3/0/7/130739593/zazox-zigugigop-vatopuja-rudorefifun.pdfIn PDF document text
    • http://files.aroundtheboundary.com/uploads/1/3/1/4/131437018/eb0e353d7957761.pdfIn PDF document text
    • http://files.shortattentionspanquilting.com/uploads/1/3/2/6/132681351/8ea8f.pdfIn PDF document text
    • http://files.rambunctiouspress.org/uploads/1/3/1/4/131437676/6360767.pdfIn PDF document text
    • http://files.montessoricenterofjackson.org/uploads/1/3/1/0/131070762/65d8208ed76b86.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2549/7250/files/barron_s_ap_biology_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/12358144473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1970/6279/files/12698124011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1027/7025/files/minecraft_cofhworld_1._12._2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1260/1502/files/titedid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/3312/9123/files/search_engine_optimization_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1936/9639/files/finder_show_hidden_files.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/78943895671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1450/3075/files/89357235456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4977/1427/files/anything_goes_song_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9736/7452/files/wovevax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/mewekozuxazigaxow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1856/6306/files/38331032247.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051d1.bin
a6b4b968f5cb67b100c82c8cf43b05b01a1ce615aae8a059c18741bcc63be66e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51D1 5464 bytes
font_01_sfnt_off00006468.bin
52d6ac8c5a203f01d1ae1ba5f193a4bf5c8085a6f5c34aed270868d9899839da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6468 10240 bytes

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