Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb817319e046097a…

MALICIOUS

PDF

54.4 KB Created: 2020-09-01 00:44:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96c524437f0299e1bc47cb2c9acc5b2e SHA-1: a1653a642dcad5cc7e93cccc3bfbb2d8d3e1a887 SHA-256: eb817319e046097a2359d2d9e63d9285f5f25c4e529f0c3270c776c737673623
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1566.002 Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF contains a mass external link farm, with many links pointing to benign Shopify domains, but one critical link to a known malicious redirector at ttraff.ru. The document also instructs the user to disable security software, a common tactic to bypass defenses. The presence of a visual download button further supports a social engineering lure. No scripts were extracted, but the combination of a malicious redirector and security bypass instructions strongly suggests a phishing or malware delivery attempt.

Heuristics 5

  • 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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.ru/wix?keyword=movies+utorrent+mac
    • https://cdn.shopify.com/s/files/1/0450/0927/2990/files/cara_buat_bookmark_di_nitro.pdf
    • https://cdn.shopify.com/s/files/1/0435/1528/1568/files/flower_wallpaper_rose.pdf
    • https://cdn.shopify.com/s/files/1/0428/8797/0975/files/79221777742.pdf
    • https://cdn.shopify.com/s/files/1/0440/6486/6469/files/gobijinabuwebu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2666/9987/files/paterijiga.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/7741595385.pdf
    • https://cdn.shopify.com/s/files/1/0435/5316/1367/files/21650783715.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c8b5291c90d4cd3ae4ba29955c5d416.pdf
    • https://static.usrfiles.com/ugd/b8c837_da67616249a94069aded818778114e0a.pdf
    • https://static.usrfiles.com/ugd/b8c837_bab4fb75bd07401dbd7e7bf39f9660f0.pdf
    • https://static.usrfiles.com/ugd/c836c3_e9feb2a33f924608a4ab9c8e3e1e91eb.pdf
    • https://static.usrfiles.com/ugd/43d598_adb9f7c08e0c4c6ca2144546de351b41.pdf
    • https://cdn.shopify.com/s/files/1/0433/0926/9156/files/garage_band_windows.pdf
    • https://cdn.shopify.com/s/files/1/0432/8567/6192/files/cerebral_hemorrhage_treatment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0435/8524/1256/files/donoxeliludokebatetutu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3100/2264/files/transformers_prime_arcee_x_reader.pdf
    • https://cdn.shopify.com/s/files/1/0431/0545/2193/files/yris_palmer_biografia.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007af8.bin
dbd4eece908c24b759b045a29f72460e7a17920bd57a3332627f387872c905b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF8 4860 bytes
font_01_sfnt_off00008b61.bin
b3ebb7423cf8fdce0c12f41b3867c48170b1698a292a5ad7ea92c5ffd31c703e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B61 4276 bytes
font_02_sfnt_off00009bb2.bin
adf772c6fd5763cf0af8142ee243c492f27b87d6fcae297096cc4097ee139ba6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB2 10132 bytes
font_03_sfnt_off0000be3c.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE3C 4324 bytes

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