Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d0edcfe8dfa09b…

MALICIOUS

PDF

67.8 KB Created: 2020-08-18 15:22:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00f91c68f49b67032d996085b3cbc040 SHA-1: b87f374c0692e1e51be58abe6c195e0d8d638dea SHA-256: e3d0edcfe8dfa09be64f033086995c6af67cc335ac49cef5f42e927b7389885b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though heavily obfuscated, contains the URL that is likely intended to lure the user into clicking on it. The presence of a PDF link farm and a malicious redirector strongly suggests a phishing or social engineering attack.

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=comparative+irregular+adjectives+worksheet
    • http://dogatof.gilescartwright.co.uk/uploads/1/3/0/7/130776447/nesobuvu_gonivizulumi_xoxigeto_zatakovinute.pdf
    • http://files.thehenrysplantfarmonline.com/uploads/1/3/0/7/130739951/tivajavari.pdf
    • http://files.bengrayzel.com/uploads/1/3/1/6/131606694/114e4aa39b5.pdf
    • http://files.islandschoolhistory.com/uploads/1/3/1/6/131637325/5742891.pdf
    • http://files.anndyer.org/uploads/1/3/1/4/131438471/0112854273fd4.pdf
    • https://cdn.shopify.com/s/files/1/0435/0027/3830/files/velidexowegosotosazazinan.pdf
    • https://cdn.shopify.com/s/files/1/0434/1845/2120/files/zisepi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0549/9801/files/judetexetojux.pdf
    • https://cdn.shopify.com/s/files/1/0432/0706/5760/files/po_bank_exam_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/3003/6123/files/possessive_adjectives_and_subject_pronouns_exercises_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0437/0821/9547/files/62137286649.pdf
    • https://cdn.shopify.com/s/files/1/0441/2715/8424/files/the_norton_anthology_of_african_american_literature_online.pdf
    • https://cdn.shopify.com/s/files/1/0433/4403/5993/files/three_billy_goats_gruff_story.pdf
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/jiduxoleded.pdf
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/patiros.pdf
    • https://cdn.shopify.com/s/files/1/0430/1350/5185/files/girekigakosagisorusuxu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/gonedar.pdf
    • https://cdn.shopify.com/s/files/1/0435/1367/5928/files/senior_system_administrator_interview_questions_and_answers.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009db0.bin
4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DB0 2828 bytes
font_01_sfnt_off0000a7ab.bin
77c68c2a114ecb3d815efba79c9fa79e721ae8653864fea6bd591e5c9d7a359d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7AB 5580 bytes
font_02_sfnt_off0000bac0.bin
abd26ccc7c5631f0750df3b2c5d28e6a24b4a03974edbac9c5f1244e8373c365		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAC0 9780 bytes
font_03_sfnt_off0000dc57.bin
d8a1a34de14a7b8fce5e51635835121d353d188f9ac9ce1e11538509fd4c5cdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC57 16060 bytes
font_04_sfnt_off0000f0ef.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EF 4324 bytes

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