Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb6a739a35e77998…

MALICIOUS

PDF

43.1 KB Created: 2020-08-14 15:36:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0308e4745e32f644713633138c38194 SHA-1: 21c17ba24459d191efb2dd327745b7f0151ae8bd SHA-256: eb6a739a35e779981c9f0a15e5fdd4b7c03626c6d51e1cba8ab60e6f4b1ce91a
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a direct link to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=mobile+caller+location+tracker', suggesting a lure to a fake service. The ML classifier strongly indicated maliciousness, and the PDF structure itself was flagged for containing a mass external PDF link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=mobile+caller+location+tracker
    • http://files.create-diy-online.com/uploads/1/3/1/6/131606408/gajurawagin_bodidusuk.pdf
    • http://files.wildflowercentury.org/uploads/1/3/1/0/131070722/moxede-pukikosexolu-navitilu.pdf
    • http://files.openairsessa.com/uploads/1/3/1/0/131071312/getuvotimo.pdf
    • http://womuju.uwchipsi.com/uploads/1/3/0/7/130776031/9912128.pdf
    • https://cdn.shopify.com/s/files/1/0431/5634/0890/files/34734727203.pdf
    • https://cdn.shopify.com/s/files/1/0429/1615/1455/files/99478262361.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/xewutivutesitegabasik.pdf
    • https://cdn.shopify.com/s/files/1/0427/8065/5775/files/nilenatefexaxolivu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6710/3645/files/gamiwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/5262/2231/files/gugulobemejaxosubuwu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0103/6443/files/ballade_pour_adeline_original_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/3493/5447/files/cdc_vaccine_information_statement.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/vikidegavudabolifexafene.pdf
    • https://cdn.shopify.com/s/files/1/0437/6484/2647/files/weather_update_app_apk.pdf
    • https://cdn.shopify.com/s/files/1/0432/9000/1572/files/sejatebowaxomotetijosajod.pdf
    • https://cdn.shopify.com/s/files/1/0450/1949/6606/files/coachmen_rv_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6682/6656/files/34136188383.pdf
    • https://cdn.shopify.com/s/files/1/0434/4234/0007/files/41393686162.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_off00006d62.bin
d0e237f2d64acfc04cb8ed63651cedbd1861b2c92d56dd9737cba381dfd37eb9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D62 4824 bytes
font_01_sfnt_off00007ddd.bin
1d198789aa8a3c0adc54eb255e3922695718be136305fb7947b6fb3b6fa79cf9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDD 9876 bytes