Malicious PDF — malware analysis report

Static analysis result for SHA-256 b113a9e1d7e0e72d…

MALICIOUS

PDF

45.1 KB Created: 2020-08-27 22:51:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4dad85aab9ddab028e80366d369b9b24 SHA-1: 573a098b38a89ad4b5d55bdf086f410c58782457 SHA-256: b113a9e1d7e0e72dba5cf96e410fbbb66883ac42e92d00fd06d83fb2f69d13d9
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is further disguised with a keyword related to software downloads. The document body also contains this URL, reinforcing the lure. The presence of a link farm suggests an attempt to manipulate search engine results to drive traffic to 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=hp+windows+xp+media+center+edition+2005+iso+download
    • http://dezokam.sports-supporter.com/uploads/1/3/0/7/130776088/logodogekiwevevele.pdf
    • http://nupex.drelraghy.com/uploads/1/3/1/4/131437246/loraxuzamomisofuwufe.pdf
    • http://files.bampilates.com/uploads/1/3/1/4/131438741/1940dcd9a51.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7268/files/angular_6_admin_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/7874/6261/files/vexulopokabozogalejuv.pdf
    • https://cdn.shopify.com/s/files/1/0436/2053/2386/files/latest_version_of_auslogics_disk_defrag.pdf
    • https://cdn.shopify.com/s/files/1/0438/1471/5554/files/numerical_analysis_of_partial_differential_equations.pdf
    • https://cdn.shopify.com/s/files/1/0433/7867/1783/files/thyroid_ultrasound_report_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0433/0799/1208/files/who_s_your_daddy_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/67421251859.pdf
    • https://cdn.shopify.com/s/files/1/0437/1103/7589/files/rrb_bank_syllabus_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fenajowogotuxukat.pdf
    • https://cdn.shopify.com/s/files/1/0461/7981/1481/files/dorizejig.pdf
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/wenuxafune.pdf
    • https://cdn.shopify.com/s/files/1/0429/6825/2565/files/xadobukuvorere.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_off00006e01.bin
53919be3c70e3c783197bc81c3c4c2558e91674e9fa14fc219334d019b010e15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E01 5736 bytes
font_01_sfnt_off0000817f.bin
150b8a78752f206bf7a296309f55abf344a92ba8373eb892c1fdf38f13ab42e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x817F 10940 bytes

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