Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ea6e7684d1f4c21…

MALICIOUS

PDF

50.8 KB Created: 2020-08-12 00:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51a8453967a8029ebb90261ad4e4d1b0 SHA-1: 9a40aeb5ee53f023e6c629cf70e2c5437c505966 SHA-256: 5ea6e7684d1f4c2127d851221b86c5431882cdf021dc7e440c9f52496da03ca0
170 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body also includes a link to 'ttraff.com', which is flagged as a malicious redirector. The presence of urgency and download button lures further supports a malicious intent to trick the user into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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
  • 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=converter+pdf+to+dwg+online+free
    • http://files.visionquilt.org/uploads/1/3/1/4/131482975/2317303.pdf
    • http://files.bigtable.net/uploads/1/3/0/7/130739404/xipexuzogog-lutejavujiwuzu.pdf
    • http://notik.friendslakeshorepreserve.com/uploads/1/3/1/6/131607095/jotigezofo.pdf
    • http://files.noaries.com/uploads/1/3/0/8/130874110/dofagunef.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/3954/5761/files/pisusuxililikexogax.pdf
    • https://cdn.shopify.com/s/files/1/0448/0519/3885/files/all_cheat_codes_of_gta_vice_city_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/41191727539.pdf
    • https://cdn.shopify.com/s/files/1/0436/4645/1862/files/53491201606.pdf
    • https://cdn.shopify.com/s/files/1/0433/3548/3551/files/bantu_education_act.pdf
    • https://cdn.shopify.com/s/files/1/0433/7981/8661/files/tafuverokolorad.pdf
    • https://cdn.shopify.com/s/files/1/0445/4429/5076/files/ropenogomazawesile.pdf
    • https://cdn.shopify.com/s/files/1/0435/0279/6964/files/wufet.pdf
    • https://cdn.shopify.com/s/files/1/0448/6466/7810/files/florida_highway_patrol_accident_report.pdf
    • https://cdn.shopify.com/s/files/1/0440/2338/2166/files/sozivemonukonevamitolotor.pdf
    • https://cdn.shopify.com/s/files/1/0427/3248/6823/files/bpsc_assistant_engineer_syllabus_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/xogisameminuw.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006658.bin
0bbf38c3a3f40430ed57cfbbe59a73e8f28ec57daa0d1a48877658f94cfa1a50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6658 6764 bytes
font_01_sfnt_off00007ce1.bin
0d4febd3dc6402c39926ba787f4c2da1767b2f3fbab5f5acd81b87873fc7ca55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE1 4784 bytes
font_02_sfnt_off00008d50.bin
22361ce237ed29cf26f375bf38822400ce311a8f97155982972808bde76eddc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D50 10016 bytes
font_03_sfnt_off0000afaf.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFAF 4324 bytes

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