Malicious PDF — malware analysis report

Static analysis result for SHA-256 c34ab55672212d71…

MALICIOUS

PDF

37.5 KB Created: 2020-08-16 14:30:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2a9b5b9a848a87e42de5235f71b630c SHA-1: 3e856cdab766d0a977d895b9d091140a5cff56ee SHA-256: c34ab55672212d71d3407956cd2d0c49370b3205c376257bf320b56bc284416b
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically mentioning 'soda pdf crack' as a lure. It also exhibits a PDF link farm, with many external PDF links, likely for SEO poisoning. The document body, though heavily obfuscated, contains the same redirector URL. The presence of a 'Password-protected archive handoff' heuristic suggests the intent is to trick the user into downloading an archive, possibly after clicking the malicious link, to bypass gateway scanning.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=soda+pdf+crack
    • http://pivotowad.nottinghamorthodox.org.uk/uploads/1/3/0/7/130775350/238234.pdf
    • http://fifitafa.eileenreynolds.com/uploads/1/3/1/3/131381882/wajebuliz-dulez-fatulasiboj-watibomujiwez.pdf
    • http://files.strathamcirclenursery.com/uploads/1/3/1/3/131398430/ad34fc9d.pdf
    • http://files.jasonricphotography.com/uploads/1/3/1/4/131408432/4759e.pdf
    • http://gowebi.springolsonphotography.com/uploads/1/3/1/6/131606552/6a62f0bb.pdf
    • https://cdn.shopify.com/s/files/1/0430/4171/8426/files/first_conditional_second_conditional_third_conditional_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/2370/3970/files/wosebibizak.pdf
    • https://cdn.shopify.com/s/files/1/0429/7005/4805/files/29894508856.pdf
    • https://cdn.shopify.com/s/files/1/0432/7053/7374/files/gnostics_gospels.pdf
    • https://cdn.shopify.com/s/files/1/0429/2971/7407/files/59335137411.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4252/files/wasijilakov.pdf
    • https://cdn.shopify.com/s/files/1/0436/3337/7440/files/comment_prsenter_une_bibliographie.pdf
    • https://cdn.shopify.com/s/files/1/0434/2746/3324/files/72290302894.pdf
    • https://cdn.shopify.com/s/files/1/0434/6635/8934/files/crystal_ring_shield.pdf
    • https://cdn.shopify.com/s/files/1/0429/2529/3724/files/14888772769.pdf
    • https://cdn.shopify.com/s/files/1/0450/4076/3030/files/blocking_queue_implementation_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0428/6437/8022/files/yaseen_sharif_full.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_off0000546c.bin
18417ee94f8ec2730045f66e64f787b515412df3a3e226d396f81e89cbabbd6a
pdf-font-stream PDF embedded font (sfnt) at offset 0x546C 5104 bytes
font_01_sfnt_off000065de.bin
bea353ba5917072abff38ea266d9de57e7d13cea728ec31ae4f5ee5cae1779c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x65DE 10484 bytes