Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bdc4e865eb55b7a…

MALICIOUS

PDF

42.8 KB Created: 2020-09-17 02:51:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61370cb666b0ab1c650565caeeba48a2 SHA-1: 610b6369bb5017ed40635bc89aa2187d1b0102e7 SHA-256: 3bdc4e865eb55b7af8c952b51eb661b9fa60e2e2011617f12a0ab96ffed5c2b2
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to external PDF files hosted on Shopify. One of these links, ttraff.me, is flagged as a malicious redirector. The presence of a link farm and a malicious redirector suggests an attempt to lure users to malicious content or manipulate search engine results.

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.me/wix?keyword=basseterre+high+school+principal
    • https://cdn.shopify.com/s/files/1/0437/5461/9041/files/android_apps_auf_windows_tablet.pdf
    • https://cdn.shopify.com/s/files/1/0434/5665/9621/files/kuzebofupaji.pdf
    • https://cdn.shopify.com/s/files/1/0459/9051/0754/files/bulbulay_drama_mp4_video.pdf
    • https://cdn.shopify.com/s/files/1/0468/1518/3002/files/birdy_wings_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/27414008161.pdf
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/14922900765.pdf
    • https://cdn.shopify.com/s/files/1/0431/5738/9472/files/zijulotokogizilifiwu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1703/files/87883533253.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4456/files/zosoduvus.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5675/files/73275839665.pdf
    • https://cdn.shopify.com/s/files/1/0462/8637/3025/files/29530547435.pdf
    • https://cdn.shopify.com/s/files/1/0432/5366/1854/files/bifuripetumus.pdf
    • https://cdn.shopify.com/s/files/1/0430/4915/6757/files/rslinx_classic_communications_server_has_stopped_working.pdf
    • https://013902ac-7201-44c8-b933-4bf4ddd1347a.filesusr.com/ugd/9bd82e_d7bc3ff73f2d44fa8047750238a89d89.pdf?index=true
    • https://bd29cd1d-2862-4ae7-928c-da2e937d6380.filesusr.com/ugd/3ddeef_b3d4287b26af4242915b4b6833077fee.pdf?index=true
    • https://0491262e-501a-4253-a6a6-190090d48b97.filesusr.com/ugd/c345b0_67925b7271a845f0adcf3961012d5930.pdf?index=true
    • https://9c201afb-0df6-47ff-a0e4-a5d316620d74.filesusr.com/ugd/ab922d_ef4e393f25134fe48bf501440109e914.pdf?index=true
    • https://7b069031-ac9d-4f16-aa3a-f88c19b0834e.filesusr.com/ugd/136d3d_6b984de638e3445eb83641e40a5d97a9.pdf?index=true
    • 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_off00006892.bin
7e942a7189e14463c55224f6009830c7d11759a879377889b1f2b24161fc3506
pdf-font-stream PDF embedded font (sfnt) at offset 0x6892 5244 bytes
font_01_sfnt_off00007a67.bin
c6eb25736b31a8760b3c37e4758ca08d7a60df49055737d484c651854955f475
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A67 10384 bytes