Malicious PDF — malware analysis report

Static analysis result for SHA-256 501459677454461a…

MALICIOUS

PDF

48.1 KB Created: 2020-08-07 03:44:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77eb20fd6710f4e139c9091415d39002 SHA-1: e8b751c498e39c685eb4152a316c603329548d9d SHA-256: 501459677454461abb275740a0aa8471f3d80a3aa898bc888977225fefbece90
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector infrastructure at `https://ttraff.com/wb?keyword=espectroscopia%20de%20absorcion%20atomica%20de%20llama%20pdf`. The document body itself is heavily obfuscated but contains this URL and numerous other links hosted on `cdn.shopify.com` and other domains, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious sites.

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/wb?keyword=espectroscopia%20de%20absorcion%20atomica%20de%20llama%20pdf
    • http://files.renoirpropertygroup.com/uploads/1/3/0/7/130739393/cf987b7b53a17.pdf
    • http://files.stclairortho.org/uploads/1/3/0/7/130738596/a70d5b08ba.pdf
    • http://files.jackethestarlighters.com/uploads/1/3/1/1/131164295/polis.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/bawuwururud.pdf
    • https://cdn.shopify.com/s/files/1/0436/3013/3406/files/5635772374.pdf
    • https://cdn.shopify.com/s/files/1/0429/4351/2732/files/gerevufusezevomelelam.pdf
    • https://cdn.shopify.com/s/files/1/0436/7931/8166/files/mobile_phone_addiction_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0430/9578/5621/files/vuvigewavikurufuval.pdf
    • https://cdn.shopify.com/s/files/1/0433/9469/5329/files/how_to_reset_root_password_mysql_mac.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/37878029996.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/8542545089.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mosagewenusuwaguxizekud.pdf
    • https://cdn.shopify.com/s/files/1/0438/9024/5787/files/94183028486.pdf
    • https://cdn.shopify.com/s/files/1/0432/7125/8278/files/36974206381.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/wuwazanewuzulisatigaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/70755613460.pdf
    • https://cdn.shopify.com/s/files/1/0436/1771/4338/files/linear_search_vs_binary_search.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b09.bin
7a98cc769b5891fb75982d3ef2994256be1982516a0802fbb32c6c5014bfe73d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B09 5400 bytes
font_01_sfnt_off00008d4a.bin
ac15e20b08023c2f2e9ee7846bc8fef36ed1d0ca19d449b743a7f019b5492d6c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D4A 10980 bytes