Malicious PDF — malware analysis report

Static analysis result for SHA-256 34a82873d7d15ca0…

MALICIOUS

PDF

39.1 KB Created: 2020-08-21 04:24:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c258c23e5d8585468f5c1a720856b9ad SHA-1: d85423e7744dc366b18ef82271e707d42b03d70d SHA-256: 34a82873d7d15ca009e0d094657eb704be472385ed0b17ada8363ecc9bb53aed
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, https://ttraff.ru/pify?keyword=google+bypass+apk+6.+0. This suggests the document's primary purpose is to redirect users to malicious sites, likely for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=google+bypass+apk+6.+0
    • http://wusirut.amersonelite.com/uploads/1/3/0/9/130969060/majigabomiz.pdf
    • http://files.50plusstickingtogether.com/uploads/1/3/0/9/130969510/aa98a3221e.pdf
    • https://cdn.shopify.com/s/files/1/0439/2294/8251/files/dededejirazu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/madupi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/lavepisolona.pdf
    • https://cdn.shopify.com/s/files/1/0440/9714/2936/files/bapikuxoboko.pdf
    • https://cdn.shopify.com/s/files/1/0430/3110/1603/files/android_notification_icon_specs.pdf
    • https://cdn.shopify.com/s/files/1/0433/7677/1224/files/bca_1st_year_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/4715/7914/files/5503212847.pdf
    • https://cdn.shopify.com/s/files/1/0451/0574/1989/files/advertising_vocabulary.pdf
    • https://cdn.shopify.com/s/files/1/0437/2342/3912/files/1716437985.pdf
    • https://cdn.shopify.com/s/files/1/0448/8429/5847/files/69316784794.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_off00005a6c.bin
83821560692c77c16017c4fd8b33b835194ba36f870d7e77e257e0086142b725		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6C 5556 bytes
font_01_sfnt_off00006d7f.bin
cceac6b2db4c60c7ddf27c1c86d39dfa455bfc928808cefe7af72fcc3dffa038		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7F 10060 bytes

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