Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cdfdba5e27aac04…

MALICIOUS

PDF

40.5 KB Created: 2020-08-23 21:44:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dcb6e1af00bdda02f592fcabc9faa5b SHA-1: 2aab20c6ecd5c84035659285db98c4050ddf64a8 SHA-256: 3cdfdba5e27aac046c63f8bea5e820e94f80a4d78ff3f25175984edad57e550e
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is the primary indicator of malicious intent. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=synthesia+piano+apk+full', suggesting a lure for software downloads. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, likely to manipulate search engine rankings or distribute further 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.cc/pify?keyword=synthesia+piano+apk+full
    • http://soseniwe.lifetimeepoxyfloors.com/uploads/1/3/0/7/130776321/0fb88f3881.pdf
    • http://winulip.artfullyfrosted.com/uploads/1/3/0/7/130775045/256382.pdf
    • http://files.nourishingjourneywellness.com/uploads/1/3/1/4/131437308/784f28b68746.pdf
    • http://zuwadubem.stoneycreekcacti.com/uploads/1/3/1/6/131606345/beberogibe_wowimumibobe_rumifuzuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97428896976.pdf
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/lejamovur.pdf
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/bpsc_sociology_optional_question_paper.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/lowazozinorowogikuxotanab.pdf
    • https://cdn.shopify.com/s/files/1/0432/6594/9862/files/bhagavad_gita_telugu_file_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/6725/1617/files/nilivuketedajopus.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7616/files/70402513075.pdf
    • https://cdn.shopify.com/s/files/1/0431/7518/2496/files/essential_mathematics_for_economic_analysis_knut_sydsaeter.pdf
    • https://cdn.shopify.com/s/files/1/0439/4736/0414/files/pdf_converter_computer_bild.pdf
    • https://cdn.shopify.com/s/files/1/0437/9269/5456/files/boishakhi_mela_song.pdf
    • https://cdn.shopify.com/s/files/1/0431/7777/1164/files/ring_of_spell_turning.pdf
    • https://cdn.shopify.com/s/files/1/0433/5478/3893/files/bronconeumonia_pediatrica.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_off000060f0.bin
1ad9faedba5c9a14a5fcd499e9a5f58ab5294bfd9780936f84439b1ab1a458d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x60F0 5164 bytes
font_01_sfnt_off0000727f.bin
199952efd9882f5ecb72d2ed8dd1ab75e2ae4c4fe9a8d2d88134e680a2b944ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x727F 10136 bytes