Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e4a253c634abf3f…

MALICIOUS

PDF

98.7 KB Created: 2020-08-17 02:24:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df83e408666a75e653fae06640ba0780 SHA-1: b8083daae79da7b76920ba4c832c317b172aacb4 SHA-256: 1e4a253c634abf3f0434039ea2e3fb0f9fd17dfc52cb79bc5bbf836598cd7064
130 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, aiming to lure users to a malicious site. The link `https://ttraff.com/pify?keyword=caller+id+location+premium+apk` is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, reinforcing the malicious intent.

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=caller+id+location+premium+apk
    • http://files.marylynnswenson.com/uploads/1/3/0/7/130739810/967865.pdf
    • http://files.austinurbaninstitute.org/uploads/1/3/0/7/130738928/xifukifu.pdf
    • http://files.thehousefixers.com/uploads/1/3/0/8/130814716/821974.pdf
    • http://files.atoalabama.com/uploads/1/3/1/4/131483009/musogexagubotiwam.pdf
    • http://files.marylynnswenson.com/uploa
    • https://cdn.shopify.com/s/files/1/0439/2471/7723/files/35490279961.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/30943902286.pdf
    • https://cdn.shopify.com/s/files/1/0428/6863/7862/files/19297651856.pdf
    • https://cdn.shopify.com/s/files/1/0435/9690/6659/files/vertex_of_parabola_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/6524/4832/files/83317501636.pdf
    • https://cdn.shopify.com/s/files/1/0429/3787/6639/files/bunny_ears_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/62566718187.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001069a.bin
02967239f03d25a6580898e2cbd3a75047d73a90ab6732354911e8a5c1905de2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1069A 3200 bytes
font_01_sfnt_off000111f3.bin
23966ed72c6934a6df06b82e4e5b9bfc9b42ab116e8ba9f9bb24a56a4624cbb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111F3 5008 bytes
font_02_sfnt_off000122db.bin
3efcfea58f746c816fcdac610692e747d29821f3f4415f4f4ab23ab335833198		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122DB 8660 bytes
font_03_sfnt_off00013f94.bin
c826224eedd18d625ceb05137a184f36e1190b77e0a61a9d8b2c52074d6a020c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F94 11320 bytes
font_04_sfnt_off00016639.bin
cf1a71d3fc22f906336461679ac621aaf9ea87b4acdc27b617a8d28b7499744e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16639 16356 bytes

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