Malicious PDF — malware analysis report

Static analysis result for SHA-256 acc053b844dbdf9b…

MALICIOUS

PDF

63.3 KB Created: 2020-08-05 15:09:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72e6e84b96a54aa98db78dbe0b118d2f SHA-1: 6b1b5b8562c4d5ce391f679ae9f099cb7d704f6f SHA-256: acc053b844dbdf9b29b068a433eaf647d63d843e97c6c0d43daa5b88ca67cdb0
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One of the primary links, disguised as a file download, points to a known malicious redirector. The document body, though heavily obfuscated, contains the same lure text and URLs, reinforcing the malicious intent.

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=bangladesh+map+pdf+file+download
    • http://files.baslerchiro.com/uploads/1/3/1/4/131406491/ludusexole.pdf
    • http://files.exitstrategyband.com/uploads/1/3/1/3/131379183/denapawif.pdf
    • http://domapet.gardenincubator.org/uploads/1/3/1/4/131407148/6349234.pdf
    • http://files.sarahwatercolorart.com/uploads/1/3/0/7/130739704/a694910985243.pdf
    • https://cdn.shopify.com/s/files/1/0436/1771/4338/files/backup_chrome_bookmarks.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6766/files/16490415101.pdf
    • https://cdn.shopify.com/s/files/1/0434/9476/8792/files/ragazos.pdf
    • https://cdn.shopify.com/s/files/1/0432/5320/3102/files/luxekawaluk.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/48392201225.pdf
    • https://cdn.shopify.com/s/files/1/0437/8011/2545/files/dekewujepojopuviwapovod.pdf
    • https://cdn.shopify.com/s/files/1/0435/4696/8218/files/mewakuvesevabajo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/20004450085.pdf
    • https://cdn.shopify.com/s/files/1/0430/6200/1825/files/mokuxeserujew.pdf
    • https://cdn.shopify.com/s/files/1/0429/2886/5446/files/1302889210.pdf
    • https://cdn.shopify.com/s/files/1/0430/7451/9194/files/93442592738.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9908973296.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/50219577113.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_off0000b0a0.bin
6f5a0b75058a3c8b633a788ca094d0a5adc2d24726027780e577e2623851a8ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0A0 5500 bytes
font_01_sfnt_off0000c347.bin
c14213b5de70cc6d323bbbe5781386f1d67c9f0e7ff2f9e224785f572d992529		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC347 14292 bytes

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