Malicious PDF — malware analysis report

Static analysis result for SHA-256 43ce1572917a242c…

MALICIOUS

PDF

44.3 KB Created: 2020-09-06 15:33:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d35d13f9a8e3f34c0158b33748ca6065 SHA-1: f48babc32ac70c08a72536d44af31b1ca5e4a781 SHA-256: 43ce1572917a242cf9dae809c5b46c4234c991f275d1c53b47917799dc73aac3
130 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, suggesting a link farm or redirection attempt. The presence of a visual download button lure further supports the malicious intent. The primary malicious URL identified is ttraff.link, which redirects to a payload. The document body contains garbled text but includes the malicious URL and several other PDF links.

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.link/wix?keyword=crp+level+full+form
    • https://static.usrfiles.com/ugd/bd7df1_59c0fdc4153f416eb5918a5b88834f1e.pdf
    • https://static.usrfiles.com/ugd/b444d4_612b2788c27747658ea4f1910cbf7e38.pdf
    • https://static.usrfiles.com/ugd/9e41f0_2ec030571aa4441b9e494dbf635a0349.pdf
    • https://static.usrfiles.com/ugd/99a8f2_3c8d0163ff4f462b96bcbb55225210f1.pdf
    • https://static.usrfiles.com/ugd/77941b_423e30fde46b4f59b922e3f3675e0bbd.pdf
    • https://static.usrfiles.com/ugd/dd4472_e8aa61f82c15410dbcf0516e9c84df5c.pdf
    • https://static.usrfiles.com/ugd/73f3b0_18e044cf1eff4446bd2607bf196e7350.pdf
    • https://static.usrfiles.com/ugd/5262df_497fdfb448c648088fbb9e2d55d225e2.pdf
    • https://static.usrfiles.com/ugd/b4609a_2c708adec8e547c680d42533a7834555.pdf
    • https://cdn.shopify.com/s/files/1/0434/3676/9447/files/javascript_binary_tree.pdf
    • https://cdn.shopify.com/s/files/1/0438/0616/3104/files/ffxiv_crafting_gear_melding_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botolewapaniwid.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_off0000639a.bin
9c98df25325c1afd67f266bd9d28a659a4384a601c8ce41432a4a90c3edf9f3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x639A 4392 bytes
font_01_sfnt_off00007293.bin
c43aa85e1adc92bb207fed4ea495e51502c7bb64fde98c53436593163ff125bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7293 10596 bytes
font_02_sfnt_off000096bd.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96BD 4324 bytes

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