Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdaa35071f06fbe4…

MALICIOUS

PDF

45.8 KB Created: 2020-08-07 00:59:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 585abf66a712cad9229bbbb9901a8197 SHA-1: 75b644817f1e49cb7212634021bcdde27dcdd1ab SHA-256: cdaa35071f06fbe4ade657c69116ba0378ac4f85bfb5479ed9dda5691fa2cffd
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at ttraff.com. The document body, though malformed, contains text suggesting a lure related to "needle bearing size chart pdf", which aligns with the redirector's keyword. The primary attack pattern involves tricking users into clicking a link that leads to malicious infrastructure.

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.com/pify?keyword=needle+bearing+size+chart+pdf
    • http://files.mistymacal.com/uploads/1/3/2/6/132681882/07276467920f3.pdf
    • http://files.heatherannette.com/uploads/1/3/1/0/131070611/xazujun_buxunup_xabuzawuses.pdf
    • http://files.8citiesnb.com/uploads/1/3/1/4/131437976/de5ada89.pdf
    • https://cdn.shopify.com/s/files/1/0440/8773/8533/files/58554041832.pdf
    • https://cdn.shopify.com/s/files/1/0430/9434/3841/files/ligelitakiposoteno.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0154/files/50943595773.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3602/files/buxexuw.pdf
    • https://cdn.shopify.com/s/files/1/0437/4190/5057/files/professional_qualities_of_a_good_teacher.pdf
    • https://cdn.shopify.com/s/files/1/0435/6793/9743/files/chapter_33_apush.pdf
    • https://cdn.shopify.com/s/files/1/0429/8620/9439/files/36514107916.pdf
    • https://cdn.shopify.com/s/files/1/0435/3887/4532/files/curtis_air_compressor_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/3712/0933/files/95719173718.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6157/files/91696031586.pdf
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/35762278962.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c12.bin
19fd8482145107aa6923ddd83d4bf09508f49f313856e236b3623838fda280e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C12 5576 bytes
font_01_sfnt_off00006f0f.bin
a59dc132b850d840f897656f65f4165c65dc6be327056ca15a9cfae4f6f58a17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0F 9572 bytes
font_02_sfnt_off0000901f.bin
3a4638eecdb49a75d59dd3a6d9342f5cf136124eef043efc901be77837571066		 pdf-font-stream PDF embedded font (sfnt) at offset 0x901F 17672 bytes

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