Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b9977220f1410c…

MALICIOUS

PDF

40.8 KB Created: 2020-08-31 00:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46b9cbfd3f54ea641abf7482fc7e0d6a SHA-1: fff67f38902e601441165bd9c517ff6b8e755b99 SHA-256: 00b9977220f1410cb82e9552042d54f6adc9e10f3942bb1e8491f50462fa20dd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Link T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, with numerous external links, many hosted on Shopify. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which is likely used to lure users to a malicious site.

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/wix?keyword=p204f+vw+conexi%25C3%25B3n
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/54704990996.pdf
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/breakthrough_plus_2_student_book.pdf
    • https://cdn.shopify.com/s/files/1/0468/8710/8765/files/proper_breathing_techniques_for_stre.pdf
    • https://cdn.shopify.com/s/files/1/0450/9266/7545/files/algerian_newspapers.pdf
    • https://cdn.shopify.com/s/files/1/0430/8529/9876/files/24556942875.pdf
    • https://cdn.shopify.com/s/files/1/0435/0961/2712/files/dinobekoti.pdf
    • https://cdn.shopify.com/s/files/1/0432/6601/5396/files/cholesterol_range_chart.pdf
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/php_test_mysql_connection.pdf
    • https://static.usrfiles.com/ugd/3de8a6_9f4c2147675843fbae2fb67a6036b8d4.pdf
    • https://static.usrfiles.com/ugd/804ff6_2f3d724daa3d487ca57277ae8e1f4048.pdf
    • https://static.usrfiles.com/ugd/0a052f_10fae8c5491e4219ad5b4df5c2b5124f.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8170/files/analytical_reasoning_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8788/8535/files/kipaxoxugeko.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c7f.bin
80d31b33b09cfdada4f6508c7056b2a05ec014f9d16755032fe8152af1d5c6f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7F 5076 bytes
font_01_sfnt_off00006dc0.bin
59ea96d1d12e92bc1f6cd6190210fb4720e1cb2e0452bffe04548cee0eccecfa
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC0 12196 bytes