Malicious PDF — malware analysis report

Static analysis result for SHA-256 5807d5c500e5f51f…

MALICIOUS

PDF

45.2 KB Created: 2020-08-23 19:31:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 749d7bbb07bcba722903251836064269 SHA-1: 3d12daaf2d34de18ba10b5b713efc8aac786faf0 SHA-256: 5807d5c500e5f51f086152357b046be737212798e21387f8e976e1abdbb57f5a
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding a large number of external links. One of these links, 'https://ttraff.cc/pify?keyword=manual+edge+banding+machine+cost', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to lure users to malicious infrastructure. No scripts were extracted, and the PDF structure itself is the vector for the attack.

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.cc/pify?keyword=manual+edge+banding+machine+cost
    • http://jeziwe.owensoundmassage.com/uploads/1/3/2/3/132303374/c29064760c6280.pdf
    • http://gemok.millikanmusic.com/uploads/1/3/0/7/130738732/litekorexizumo_senixenixos_raxitadarokazoz.pdf
    • https://cdn.shopify.com/s/files/1/0435/7446/0579/files/19001142248.pdf
    • https://cdn.shopify.com/s/files/1/0430/7150/4537/files/15175768502.pdf
    • https://cdn.shopify.com/s/files/1/0431/6086/2882/files/retamukuduse.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/84149611065.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9517/files/arcgis_spatial_statistics.pdf
    • https://cdn.shopify.com/s/files/1/0440/0129/6534/files/tupudosem.pdf
    • https://cdn.shopify.com/s/files/1/0437/6399/0686/files/bagapobomaxudor.pdf
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/choas_faction_2_hacked.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jedufejaselikaruratemop.pdf
    • https://cdn.shopify.com/s/files/1/0437/3574/4673/files/mmd_male_hair.pdf
    • https://cdn.shopify.com/s/files/1/0437/9734/8514/files/gumakekabosazizosedakuso.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1935/files/kukalizijolikukoz.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_off000066ee.bin
026e7c540453cab299baa0551d840046a5b67b6b92efbee6656f1945a2e5f124		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66EE 5400 bytes
font_01_sfnt_off0000791e.bin
72d37bc2cff171d2f1810cb0e873a9e31b49640c091602c23a90b4bd87e26a6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x791E 15312 bytes

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