Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aed59a135497e94…

MALICIOUS

PDF

41.5 KB Created: 2020-08-12 07:16:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee4ea7e6bb1c442ea2df77c8f5f1d3c2 SHA-1: f8f31716ec0ff13a0b26c515784efe3f9e48e063 SHA-256: 2aed59a135497e94ce151706b4a523c8632bd94f1303e60d8b5dff7849db8487
162 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector, indicating it's designed to lead users to malicious sites. The document body, though corrupted, contains text suggesting a lure related to 'techlife news pdf' and mentions remote support tools, aligning with social engineering tactics. The primary malicious IOC is the redirector URL.

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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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/wb?keyword=techlife%20news%20pdf
    • http://files.generationsantiquesandmore.com/uploads/1/3/2/6/132681672/bigasip_solerasax_bawigatakafo.pdf
    • http://files.fryeins.com/uploads/1/3/1/3/131398347/8898428.pdf
    • http://files.lasoniaragsdale.com/uploads/1/3/0/9/130969306/bazuxovufupab-jademe-sotufunup.pdf
    • http://files.msterryportfolio.com/uploads/1/3/1/0/131070938/766274.pdf
    • https://cdn.shopify.com/s/files/1/0434/1628/9447/files/49278007194.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/10615555127.pdf
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/test_driven_development_for_embedded_c.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/mowowulavotada.pdf
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/bopekopinoza.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/gukojowofazejo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7802/5377/files/furudilesorevaw.pdf
    • https://cdn.shopify.com/s/files/1/0436/3727/6825/files/century_gothic_font_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9023/1974/files/scholarship_essay_sample_about_why_i_deserve_the_scholarship.pdf
    • https://cdn.shopify.com/s/files/1/0429/8165/4679/files/ncert_class_9_biology_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/2823250768.pdf
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/history_of_typhoid_fever.pdf
    • https://cdn.shopify.com/s/files/1/0438/9978/1275/files/brussels_attractions_map.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_off00006232.bin
eb6ff693a456308a39a3109a501b63469427489bc065e7a3d6fc85c60f6e631c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6232 4980 bytes
font_01_sfnt_off00007334.bin
6d02d41aa582755c60f8397f1ceb9b2d25fa4a6bc27cd30696839b372e24b60c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7334 11280 bytes