Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a0e9f0c5ffbc83f…

MALICIOUS

PDF

46.9 KB Created: 2020-08-07 21:54:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49213253a27efbfc52b15a7ecb68e460 SHA-1: d10334bfb9d04f77a9dc1357daa6a56f23226b03 SHA-256: 4a0e9f0c5ffbc83fe37c1358fbd9e8f3786cf63d754fcaf9271775791c74930e
128 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.com. The document body, though partially corrupted, contains text related to PDF to Word conversion and the malicious URL, suggesting a social engineering lure. The presence of a 'download button' heuristic further supports the malicious intent of directing users to external resources.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=convert+adobe+reader+pdf+to+word+free
    • http://files.easternrebelsnc.com/uploads/1/3/2/6/132695280/5401664.pdf
    • http://rofama.macarthursaintsjrlfc.com/uploads/1/3/1/6/131636855/2272674.pdf
    • http://bukadavaw.thaican.ca/uploads/1/3/0/7/130776487/7025557.pdf
    • https://cdn.shopify.com/s/files/1/0431/6292/7263/files/angle_between_two_vectors.pdf
    • https://cdn.shopify.com/s/files/1/0436/1384/7714/files/zeresixuvoduvilixudoki.pdf
    • https://cdn.shopify.com/s/files/1/0436/7217/4745/files/11694014412.pdf
    • https://cdn.shopify.com/s/files/1/0438/0937/4368/files/1994_ford_ranger_manual_transmission_fluid_type.pdf
    • https://cdn.shopify.com/s/files/1/0438/3748/9309/files/33178639210.pdf
    • https://cdn.shopify.com/s/files/1/0435/6577/7059/files/the_subtle_knife.pdf
    • https://cdn.shopify.com/s/files/1/0432/1397/9812/files/dinifilonamaweruzefudave.pdf
    • https://cdn.shopify.com/s/files/1/0427/8494/8380/files/vogerotaregexiluvigose.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/muxudalexed.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4815/files/47055242357.pdf
    • https://cdn.shopify.com/s/files/1/0430/2818/5239/files/99350692048.pdf
    • https://cdn.shopify.com/s/files/1/0430/7674/7413/files/appareillage_schneider_odace.pdf
    • https://cdn.shopify.com/s/files/1/0431/0692/6754/files/riviragoxor.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d5a.bin
989e337ad6a07268da7e796cc0401c7b5ec0cbff0581557f4d29a3bcc8576acb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5A 4880 bytes
font_01_sfnt_off00007e0d.bin
f242a7e0bc52585d9e1b063a7c537af0288adf652a5956ee9decbb264cf09952
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0D 10084 bytes
font_02_sfnt_off0000a091.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA091 4324 bytes