Malicious PDF — malware analysis report

Static analysis result for SHA-256 c010f53c532d5d6b…

MALICIOUS

PDF

46.6 KB Created: 2020-08-09 12:26:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: edecdd005dc498d80ba4723e2f329a63 SHA-1: 41546cfde1ad422c233cf11123b7d422e454b1d0 SHA-256: c010f53c532d5d6b043879b535b88a2b5b7a07acddf4a7ea11dd2a65268895f4
130 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, which is a common lure for phishing or malware delivery. The document body, though heavily obfuscated, contains the malicious URL. The PDF also hosts a large number of external PDF links, likely for SEO manipulation to improve search engine ranking for 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.cc/pify?keyword=gate+2020+ee+solved+paper+pdf
    • http://pisuv.athensdentalpartner.com/uploads/1/3/1/3/131379730/7045424.pdf
    • http://parapite.cairokhanhotel.net/uploads/1/3/1/6/131606490/dea60871.pdf
    • http://files.tanessakennels.com/uploads/1/3/1/3/131398140/6957207.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/lazinilufugaxemuzurabob.pdf
    • https://cdn.shopify.com/s/files/1/0433/7103/6835/files/bozis.pdf
    • https://cdn.shopify.com/s/files/1/0434/3929/2582/files/93838409069.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fenajowogotuxukat.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/48012728090.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/duzawubemamomavokam.pdf
    • https://cdn.shopify.com/s/files/1/0437/3469/6097/files/pebevixifojilefamewibu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2797/files/35943825267.pdf
    • https://cdn.shopify.com/s/files/1/0432/9524/4452/files/juguzugevupelonofiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/6658/9335/files/autocad_2016_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0434/0826/1287/files/butterfly_printable_template.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_off000070f5.bin
6769a4351673eaafb85a7bc5a16da7663b4f7bf2cb20fea0b458801383134e42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70F5 5400 bytes
font_01_sfnt_off0000836a.bin
2275d81b2e2a29990e92db32b0c436572dfec7b2ca44d06e23f16d8bdf8a403b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x836A 13348 bytes

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