Malicious PDF — malware analysis report

Static analysis result for SHA-256 cef6a0a27b9e41fa…

MALICIOUS

PDF

42.4 KB Created: 2020-08-19 17:33:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 958f6144e05abbbb2b42892773f76931 SHA-1: ce3842e191111183d993bd8171915183f58be55d SHA-256: cef6a0a27b9e41fa29d3832fc202da7eecc1bb1d6104fe43cd4ce96217ac9965
120 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, a technique often used to create link farms for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is presented with a lure for 'Pandora plus apk'. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The presence of many external links, including those hosted on cdn.shopify.com, suggests a broad attempt to distribute malicious content.

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=pandora+plus+apk
    • http://batenimev.jeffcomorotary.org/uploads/1/3/1/6/131637881/3d6aea1eb93.pdf
    • http://files.chicosierra.com/uploads/1/3/1/1/131164043/jajowawuvur_wupisok_zonuxapuxo_lexezegusibaju.pdf
    • http://files.portraitpetmuse.com/uploads/1/3/1/4/131437655/7e32a81c39e03b.pdf
    • https://cdn.shopify.com/s/files/1/0431/0423/9770/files/sariromed.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/ditavoxadefafexikugerafif.pdf
    • https://cdn.shopify.com/s/files/1/0432/9357/3284/files/zojuribijozololizova.pdf
    • https://cdn.shopify.com/s/files/1/0430/0541/1481/files/physical_and_cognitive_development_in_adolescence.pdf
    • https://cdn.shopify.com/s/files/1/0433/9246/7109/files/tirewoxadafepuzofok.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/gotasisudaxilab.pdf
    • https://cdn.shopify.com/s/files/1/0431/4618/2822/files/75640814716.pdf
    • https://cdn.shopify.com/s/files/1/0435/3540/1111/files/customer_centricity_definition.pdf
    • https://cdn.shopify.com/s/files/1/0432/2079/5556/files/bufuxawikoligel.pdf
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/wajatujemari.pdf
    • https://cdn.shopify.com/s/files/1/0430/8126/9401/files/bivanojefisod.pdf
    • https://cdn.shopify.com/s/files/1/0436/9245/8152/files/augmented_reality_ieee_paper.pdf
    • https://cdn.shopify.com/s/files/1/0427/7737/8972/files/weather_report_hyderabad_next_week.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/76190371218.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_off00006848.bin
61ee7cee51490c1b1c037780f7f02d37da8e593dfa3d9b68af6c86b16a3045db
pdf-font-stream PDF embedded font (sfnt) at offset 0x6848 5016 bytes
font_01_sfnt_off00007962.bin
6ac3088f18073e8964bbf576fff6cca278bd15b7953ea8ab297d96106576379e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7962 10380 bytes