Malicious PDF — malware analysis report

Static analysis result for SHA-256 047bc7de2647a4c7…

MALICIOUS

PDF

46.9 KB Created: 2020-08-24 21:33:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa3f876d340f75c70f857ce1cc17678a SHA-1: 2a42c68346280e2d4a1dff0580401d0aac06126d SHA-256: 047bc7de2647a4c79091f4e6d31efbd4670a1b09f973076233365ac2fd59e7db
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that appears to be a lure for "usb bootable linux mint", directing users to the malicious ttraff.com domain. This suggests a phishing or social engineering attack aimed at redirecting 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/pify?keyword=usb+bootable+linux+mint
    • http://files.marisatcohen.com/uploads/1/3/1/4/131410007/2019329.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0448/9465/0535/files/antibiotics_simplified_download.pdf
    • https://cdn.shopify.com/s/files/1/0464/9805/4312/files/62302669169.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/atlas_of_foraminifera.pdf
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/vazezowowutefefajinuba.pdf
    • https://cdn.shopify.com/s/files/1/0434/1520/8098/files/warhammer_40k_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/4578/9606/files/mpls_vpn_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/zoxomevimosotagulipamumax.pdf
    • https://cdn.shopify.com/s/files/1/0436/1512/5662/files/69598143172.pdf
    • https://cdn.shopify.com/s/files/1/0430/4506/0762/files/materiales_odontologicos.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_off00007a8e.bin
0243b04df2776da464009e3505840b7756c1f6d2ab4d4281722c6f806ece26f9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8E 4936 bytes
font_01_sfnt_off00008b4a.bin
65208c9cc225f5abad5c18096f257db34a4df95de5f3b044dd18c77eeb059753
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B4A 10512 bytes