Malicious PDF — malware analysis report

Static analysis result for SHA-256 62b2363a88e11dba…

MALICIOUS

PDF

43.6 KB Created: 2020-09-10 04:23:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31d8585611208bb418a929d4850fc054 SHA-1: 0d705d6fd409a43b36a59f9d1070110acdddc9b2 SHA-256: 62b2363a88e11dba6598dae8b0a19618727f2f8077bee5a9abf240652e8a2505
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one pointing to a known malicious redirector. The document body and embedded links suggest a lure to download or access resources related to '3d animation software', which is likely a pretext to lead users to malicious sites. The presence of a malicious redirector and a large number of external links indicates an attempt to distribute further malicious content or phish for information.

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/pify?keyword=3d+animation+software
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/5857/7056/files/tebesimo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/48224910793.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/finding_percentages_of_amounts_worksheet_year_6.pdf
    • https://static.usrfiles.com/ugd/d4579c_8668512f81264ecb8497fbfb5b5ea315.pdf
    • https://static.usrfiles.com/ugd/c2007e_77b83f3dd224403c86ab084825e4c4b6.pdf
    • https://static.usrfiles.com/ugd/ce77c6_36cc4a117fa849b890dc38b82fc9f572.pdf
    • https://cdn.shopify.com/s/files/1/0454/6730/4102/files/ludetatusetizitata.pdf
    • https://cdn.shopify.com/s/files/1/0432/8492/2526/files/star_ocean_anamnesis_japanese_apk.pdf
    • https://cdn.shopify.com/s/files/1/0429/3319/0823/files/45535291511.pdf
    • https://cdn.shopify.com/s/files/1/0462/1765/8521/files/88363230103.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fde.bin
4c644500654d52c1baf514d66f96d5655a26b0ed41446ffb28a8efb4472d6cee
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDE 4968 bytes
font_01_sfnt_off000070aa.bin
51ce35656244e45c39e50ce14d81bf273859abea7c642d9ff499e16231e00435
pdf-font-stream PDF embedded font (sfnt) at offset 0x70AA 10420 bytes
font_02_sfnt_off0000944d.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x944D 4324 bytes