Malicious PDF — malware analysis report

Static analysis result for SHA-256 045dc0c6631ea2d4…

MALICIOUS

PDF

41.2 KB Created: 2020-08-29 12:41:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1253863e6c78db9f4e688eca33917c1 SHA-1: f89e61e5658d4de97f5276cee5c47397b93b8d1a SHA-256: 045dc0c6631ea2d44308a4b4f43c8dcb7bd60f95ec4142238e26cb7bddc996c1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that lead to a redirector infrastructure, specifically `https://ttraff.ru/wix?keyword=traktor+scratch+pro+2+download+mac+free`. This indicates a phishing or scam attempt, likely to trick users into downloading malware or visiting malicious sites. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.ru/wix?keyword=traktor+scratch+pro+2+download+mac+free
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7167/6314/files/33125653909.pdf
    • https://cdn.shopify.com/s/files/1/0438/4024/1829/files/composition_ii_in_red_blue_and_yellow.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6200/files/seturumobowatodevawonib.pdf
    • https://cdn.shopify.com/s/files/1/0434/9765/2376/files/html5_simple_template_with_code.pdf
    • https://cdn.shopify.com/s/files/1/0433/7224/9251/files/free_great_barcode_generator_crack.pdf
    • https://static.usrfiles.com/ugd/3aca14_75b01c29429f4d80afa64a7ae1f01e1b.pdf
    • https://static.usrfiles.com/ugd/b8c837_9631e454f8c64eb89350741a13eb1129.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/majoxexinojukemotimifibe.pdf
    • https://cdn.shopify.com/s/files/1/0433/7713/1683/files/clicker_heros_cheat.pdf
    • https://cdn.shopify.com/s/files/1/0432/8367/7339/files/babidopelelatoruvapori.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1293/files/kuxub.pdf
    • https://cdn.shopify.com/s/files/1/0433/6225/5013/files/48346761208.pdf
    • https://cdn.shopify.com/s/files/1/0432/9259/0236/files/aptitude_test_examples.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000621f.bin
bbe8bc57abfdabd862daecd6c8dafd9ca09e5993ddf83e5bd48e08f37dba2b03
pdf-font-stream PDF embedded font (sfnt) at offset 0x621F 5632 bytes
font_01_sfnt_off0000752e.bin
5d16e1117179270f02740227b2bb74389957864a76a212ede72f01e9595f522a
pdf-font-stream PDF embedded font (sfnt) at offset 0x752E 10152 bytes