Malicious PDF — malware analysis report

Static analysis result for SHA-256 b063b7152a3034d5…

MALICIOUS

PDF

37.1 KB Created: 2020-08-22 11:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8ca73b967020d6db3ddad677881fa56 SHA-1: 7925811d6a522c565e6ba2e4258c6bf8c1346f5f SHA-256: b063b7152a3034d52241d56891c15a041d09779ba1ff9a6331399564f1f3bbf2
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users into clicking through to potentially harmful content. The document also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on cdn.shopify.com. The presence of a 'download button' heuristic further supports the attack pattern of social engineering users into clicking malicious links.

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=apposer+signature+document+pdf
    • http://files.curtisglassart.com/uploads/1/3/1/1/131164446/6b4c2b0e1.pdf
    • http://files.cyrcertification.com/uploads/1/3/1/4/131413678/konakajubobuto_senaguz_fowuledome_tetunupa.pdf
    • http://files.captainhorne.com/uploads/1/3/1/3/131383743/6a5183.pdf
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/solubility_curves_worksheet_form_ws8._1._2a.pdf
    • https://cdn.shopify.com/s/files/1/0432/8855/9780/files/gesaropubilepusitefo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2434/1400/files/21963685601.pdf
    • https://cdn.shopify.com/s/files/1/0437/3315/6001/files/easy_algebra_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/zagafuwekeditasan.pdf
    • https://cdn.shopify.com/s/files/1/0438/0049/4237/files/siteditajidazowumok.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/lemonebomebaro.pdf
    • https://cdn.shopify.com/s/files/1/0450/4210/6518/files/pabupexibov.pdf
    • https://cdn.shopify.com/s/files/1/0435/1731/3176/files/52751626553.pdf
    • https://cdn.shopify.com/s/files/1/0430/9362/2935/files/dobikanosi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/62897585345.pdf
    • https://cdn.shopify.com/s/files/1/0437/8640/4000/files/paradise_lost_annotated.pdf
    • https://cdn.shopify.com/s/files/1/0444/4153/4631/files/broken_open_elizabeth_lesser.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_off000054cd.bin
213fff53601b882c6337edb7b07e88252e13c60fe713cb2bf555062127875040
pdf-font-stream PDF embedded font (sfnt) at offset 0x54CD 5432 bytes
font_01_sfnt_off0000672f.bin
b2cd1352598c787d21820826b8bcd46f3e48ee0ece20d5c31589434a52198036
pdf-font-stream PDF embedded font (sfnt) at offset 0x672F 9552 bytes