Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0be58ad7ca73a76…

MALICIOUS

PDF

45.7 KB Created: 2020-09-01 14:13:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c701ea7201fb8884e3c9b19edfff568f SHA-1: 8d5dd180f83f8f551793a2ebcbfa35b0bfcb6f89 SHA-256: e0be58ad7ca73a76e205880ead9f84d91da50bf81c111b487d1ecd9f039eefcc
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, forming a link farm. One of the primary links, https://ttraff.me/wix?keyword=ekel+sheet+mask+review+indonesia, is identified as a known malicious redirector. The document body is heavily obfuscated, but the presence of the malicious redirector and the link farm structure strongly suggest a phishing or malware distribution attempt. No scripts were extracted from this sample.

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.me/wix?keyword=ekel+sheet+mask+review+indonesia
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/59871713267.pdf
    • https://cdn.shopify.com/s/files/1/0431/9926/6979/files/54507478293.pdf
    • https://cdn.shopify.com/s/files/1/0466/2309/6997/files/lebekoxowete.pdf
    • https://cdn.shopify.com/s/files/1/0434/0305/1171/files/35290181285.pdf
    • https://cdn.shopify.com/s/files/1/0434/1773/1229/files/66448400371.pdf
    • https://static.usrfiles.com/ugd/c4ccc4_3d16133a180a4653b7a1a1b95ad71c60.pdf
    • https://cdn.shopify.com/s/files/1/0431/0774/5958/files/5984471485.pdf
    • https://cdn.shopify.com/s/files/1/0437/1457/6537/files/75291347570.pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/32799308183.pdf
    • https://cdn.shopify.com/s/files/1/0429/2041/1289/files/4781616704.pdf
    • https://cdn.shopify.com/s/files/1/0440/0336/0926/files/botany_for_degree_students_by_ac_dutta_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/4713/2068/files/pazojawekemufitupezak.pdf
    • https://cdn.shopify.com/s/files/1/0428/2017/3983/files/81258189023.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006121.bin
4dba19ea42960cdad3867ca078eb3d73d8c507b9a9c7fab30fd0f3b585cfbb57
pdf-font-stream PDF embedded font (sfnt) at offset 0x6121 5240 bytes
font_01_sfnt_off000072d7.bin
b5f41054280104e9d530a52e1904430036f7e569feb04931f3136fe28931be19
pdf-font-stream PDF embedded font (sfnt) at offset 0x72D7 10028 bytes
font_02_sfnt_off0000956f.bin
d8a1a34de14a7b8fce5e51635835121d353d188f9ac9ce1e11538509fd4c5cdc
pdf-font-stream PDF embedded font (sfnt) at offset 0x956F 16060 bytes