Malicious PDF — malware analysis report

Static analysis result for SHA-256 d74b4cb7b8e44f53…

MALICIOUS

PDF

44.0 KB Created: 2020-08-07 07:38:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85f6fa79b42b0447e3faf833963c614e SHA-1: e7f8e668adf17fa46d1746389ed122b40842f762 SHA-256: d74b4cb7b8e44f539238fa694d596de42cb79d353485aeda73253f0d6778c4e9
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL. This suggests the primary purpose is to redirect users to malicious sites, likely for phishing or malware delivery.

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.com/pify?keyword=causas+da+degrada%25C3%25A7%25C3%25A3o+do+solo+pdf
    • http://files.eugenemontgomery.com/uploads/1/3/1/4/131438766/zesolabugilobe.pdf
    • http://files.jjjohnsonauthor.com/uploads/1/3/1/4/131437268/lotoxaboxubuw.pdf
    • http://files.skcnparents.net/uploads/1/3/1/3/131379402/8982828.pdf
    • http://files.angelfieldfarms.com/uploads/1/3/1/6/131606248/bbf88a1a15cdd.pdf
    • http://files.osteomyelitiscenter.com/uploads/1/3/0/9/130969297/3006382.pdf
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/pixikewen.pdf
    • https://cdn.shopify.com/s/files/1/0438/4253/5574/files/sowajuvikinejikujo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/call_flooder_app.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/63545483179.pdf
    • https://cdn.shopify.com/s/files/1/0434/6380/3040/files/88467784359.pdf
    • https://cdn.shopify.com/s/files/1/0429/9449/9743/files/catia_v5_basic_commands.pdf
    • https://cdn.shopify.com/s/files/1/0440/7987/4213/files/52384113575.pdf
    • https://cdn.shopify.com/s/files/1/0429/8106/4853/files/how_to_set_up_act_ffxiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/3668/0102/files/bistronomy_french_food_unbound.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/relamerebetezuken.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/xuzozinubipigadafivudali.pdf
    • https://cdn.shopify.com/s/files/1/0429/5213/0716/files/41817400478.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_off00005f57.bin
3f5e030ce5149d80c2dfedf85a996f7512360c67e1bc29a84959e818b775e584
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F57 5380 bytes
font_01_sfnt_off00007121.bin
49557ab538e6d5f1b116a39389222c77d84e2fa1e9f71de6f7e54566c17bfc7f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7121 11272 bytes
font_02_sfnt_off000092c9.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x92C9 4324 bytes