Malicious PDF — malware analysis report

Static analysis result for SHA-256 233b712e2eea020e…

MALICIOUS

PDF

45.9 KB Created: 2020-08-06 20:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 907630318fcc8b97d76a032764a2d0b3 SHA-1: 295f7788e2cdc2cbad46e11e100e8322146cb638 SHA-256: 233b712e2eea020e7595916b5758812895505af31477b7cff7c3ff0ef515388e
128 Risk Score

Malware Insights

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

The PDF contains a prominent call-to-action disguised as a book download link, which is a common social engineering tactic. This link redirects to a known malicious redirector, indicating a phishing or malware distribution attempt. The PDF also hosts a large number of external links, many pointing to Shopify, likely as part of a link farm 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.com/pify?keyword=cutting+edge+upper+intermediate+student+book+pdf+download
    • http://files.michiganmidwife.com/uploads/1/3/1/4/131483719/b46bac00f.pdf
    • http://files.stinigoesgeneralstore.com/uploads/1/3/1/6/131636914/f3d352137.pdf
    • http://files.ballyroneycottage.com/uploads/1/3/1/0/131071297/xonojajuvak.pdf
    • http://files.msvetter.com/uploads/1/3/0/8/130874493/rofedagosexa.pdf
    • http://files.afonteififairways.org/uploads/1/3/1/8/131858287/e242586973d2.pdf
    • https://cdn.shopify.com/s/files/1/0434/1583/0695/files/andragogy_theory.pdf
    • https://cdn.shopify.com/s/files/1/0438/0108/4064/files/business_plan_booklet.pdf
    • https://cdn.shopify.com/s/files/1/0433/2208/1448/files/54625420185.pdf
    • https://cdn.shopify.com/s/files/1/0437/3469/6097/files/marketing_communication_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/0304/2216/files/berenice_edgar_allan_poe_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/41554509617.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7985/files/katagubaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/4311/0555/files/6th_grade_math_word_problems_worksheets_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/0777/8717/files/tovuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/rumukavigip.pdf
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/97815576550.pdf
    • https://cdn.shopify.com/s/files/1/0432/5218/7298/files/chinese_names_list.pdf
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/74297936021.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_off00006390.bin
c191fe268dc20a0f42ea77e15198b7194477d42736f7912bff220b13cbe90120		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6390 5560 bytes
font_01_sfnt_off0000766d.bin
f5e1b6843a2496330c5f3cbfc33614e06b7cbd9e6bfb106632939e0c2a70a431		 pdf-font-stream PDF embedded font (sfnt) at offset 0x766D 12352 bytes
font_02_sfnt_off00009be4.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BE4 4324 bytes

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