Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1eea1eb49312e57…

MALICIOUS

PDF

54.4 KB Created: 2020-07-27 09:13:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3f5b4202fc117dc9d0a7eac8ef42056 SHA-1: 71c28c67c909e0b25a8c3d4f7d060ddf0dfa4785 SHA-256: e1eea1eb49312e5726df2b1a9cca549ad0be2711364ac3d2b14ca376a36d818d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains text related to movie songs and application metadata, suggesting a lure to entice users to click the malicious link.

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.com/pify?keyword=new+tamil+movie+audio+songs++2017
    • http://files.zsofipeto.com/uploads/1/3/0/8/130814193/nopatiku-newojabarow.pdf
    • http://files.catchmyfancydesigns.com/uploads/1/3/0/9/130968956/sadiraxibuguwumizivu.pdf
    • http://files.kariccohairdesign.com/uploads/1/3/0/7/130774969/f1110.pdf
    • http://files.revmadlynbarryruch.com/uploads/1/3/0/7/130776743/914504.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/futikuzazojexopuvenewipu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/27349057092.pdf
    • https://cdn.shopify.com/s/files/1/0432/6532/7262/files/6592496078.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49893706483.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nisej.pdf
    • https://cdn.shopify.com/s/files/1/0438/0770/3201/files/safadobal.pdf
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/47615492373.pdf
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/46622852960.pdf
    • https://cdn.shopify.com/s/files/1/0434/7972/8281/files/74590607394.pdf
    • https://cdn.shopify.com/s/files/1/0437/5989/4689/files/betofafakafafemizonuxufe.pdf
    • https://cdn.shopify.com/s/files/1/0430/8048/2967/files/60092377156.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/
    • https://cdn.shopify.com/s/fi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008a65.bin
0c42189e6015ce93b07254ba1784264d8252ed036b2024611a21a065c368fb26
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A65 5456 bytes
font_01_sfnt_off00009d08.bin
6bd4e943211f269f6c610d40a32fccaaf7c237593480fff18f03992c0c825216
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D08 15680 bytes