Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bc862027f83ed07…

MALICIOUS

PDF

34.1 KB Created: 2020-08-31 04:54:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf405318bfc5236d2d913294aa112c6b SHA-1: c2b83bb0ff148cd76b9e5f632b2c68c3bd5b1b60 SHA-256: 5bc862027f83ed07e5d7e034b4e92ec0beb68a9b57c69e65d7429dc17992bb7f
174 Risk Score

Malware Insights

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

The PDF contains a callback phishing lure, instructing the user to call a phone number in a context that suggests a problem with a bill, refund, subscription, or security. It also embeds numerous links, including one to a known malicious redirector at 'ttraff.com', suggesting an attempt to direct users to malicious sites or services. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=precio+de+redotex
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61411835552.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/mechanism_of_cell_differentiation.pdf
    • https://cdn.shopify.com/s/files/1/0427/7141/5196/files/bedonalijiruta.pdf
    • https://cdn.shopify.com/s/files/1/0428/0582/1599/files/94949483974.pdf
    • https://static.usrfiles.com/ugd/b8c837_259b529153ee4d06878348b75a9551b3.pdf
    • https://static.usrfiles.com/ugd/77d535_8b68d787671c48a6b2babcd70089c0a5.pdf
    • https://static.usrfiles.com/ugd/99afdc_68d0ac0869de4de497dcd99faa95920f.pdf
    • https://static.usrfiles.com/ugd/225520_f0660a36c70a432f832b9946b8a09544.pdf
    • https://static.usrfiles.com/ugd/b8c837_e77ac6e23bbe420dbf74ac012ce76e96.pdf
    • https://cdn.shopify.com/s/files/1/0433/4672/2974/files/taco_clock_timer_265.pdf
    • https://cdn.shopify.com/s/files/1/0428/9177/2063/files/tabijudebemolijipi.pdf
    • https://cdn.shopify.com/s/files/1/0435/7269/1099/files/52249867280.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_off000046c8.bin
0bf25a7c7a0188e29bbff3bbd8835c8b3c445f5814a0e87fafa487191b049d1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46C8 4584 bytes
font_01_sfnt_off00005662.bin
0c7c4cb1a4f1214eae8bbfb974ba3cc07b9716a974382379165c24287434fb46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5662 10972 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.