Malicious PDF — malware analysis report

Static analysis result for SHA-256 afd914bdb99c6974…

MALICIOUS

PDF

42.5 KB Created: 2020-08-19 21:42:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cecc89c46e802eb93c6520b37c2b114c SHA-1: ce08a8344053b1781ed3ede1868f19a75289c483 SHA-256: afd914bdb99c69742d17fb3280bc071dc493bab975565f8636f3d30b649812f1
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. It also exhibits characteristics of a link farm, embedding a large number of external links, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the text 'Certificated security in bearer form' and the malicious URL, suggesting a lure to trick users into clicking the link.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=certificated+security+in+bearer+form
    • http://dojal.ascendingstarreiki.com/uploads/1/3/1/0/131070786/6573593.pdf
    • http://files.sarahdupeyron.com/uploads/1/3/0/9/130969545/fuzavodufugemibo.pdf
    • http://files.odjrl.com/uploads/1/3/1/3/131380308/binabukedixuta_nagumidomiwu_kimetumiwuv_janilatidake.pdf
    • http://files.heartpieces.net/uploads/1/3/1/3/131379749/3776242.pdf
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/android_alertdialog_negative_button_color.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/womonevixaxijebuvi.pdf
    • https://cdn.shopify.com/s/files/1/0440/7217/3733/files/12780558310.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98690712505.pdf
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/electrical_circuits_basics.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3755/files/5815401534.pdf
    • https://cdn.shopify.com/s/files/1/0431/4896/8100/files/git_branch_naming.pdf
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/4334832734.pdf
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/zinorumijopavagutunu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4359/3109/files/luladagufofemoxotonoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/fibezamojoxuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/6821/8780/files/analysis_and_design_of_algorithms_vtu_notes.pdf
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/1332749620.pdf
    • https://cdn.shopify.com/s/files/1/0432/5389/1232/files/thomas_early_transcendentals_12th_edition.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_off00006992.bin
a457dcf2ede4e0cd21832b1e3d090a2842a0cdd42a55bd1813ff562ea38cc501
pdf-font-stream PDF embedded font (sfnt) at offset 0x6992 5284 bytes
font_01_sfnt_off00007b6c.bin
c60657241732f535baa98c93c7d025921731a2a989a7be49145382a03457b61e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6C 9800 bytes