Malicious PDF — malware analysis report

Static analysis result for SHA-256 c46d4c25f108fe39…

MALICIOUS

PDF

42.1 KB Created: 2020-08-04 11:15:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb0a1c558d9a2647343f7baf073762f3 SHA-1: ae84f290e1d951722e75eb35799909cca621ea01 SHA-256: c46d4c25f108fe397e3d3886d697a4cc8095d5fa7bbb677801864547589833c9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of embedded URLs, many hosted on Shopify. The document body, though partially garbled, contains the same suspicious URL. This suggests the primary goal is to redirect the user to malicious content, likely for phishing or malware delivery.

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=pelaporan+keuangan+dan+standar+akuntansi+pdf
    • http://files.saraayllon.eu/uploads/1/3/2/7/132741225/f64907c28.pdf
    • http://files.myoridefitness.com/uploads/1/3/1/4/131453248/2473588.pdf
    • http://files.aldewcreative.com/uploads/1/3/1/6/131637695/1456453.pdf
    • http://files.twinwillowstherapy.com/uploads/1/3/0/7/130738639/4b3495.pdf
    • http://files.storecee.com/uploads/1/3/2/6/132682210/jixuso-wadovazaw-jexofuweza.pdf
    • https://cdn.shopify.com/s/files/1/0440/6122/9206/files/93252770261.pdf
    • https://cdn.shopify.com/s/files/1/0434/0783/5303/files/daxuvunusax.pdf
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/93618121766.pdf
    • https://cdn.shopify.com/s/files/1/0432/9177/1046/files/kisigepasaxuruw.pdf
    • https://cdn.shopify.com/s/files/1/0437/4170/8437/files/boyle_s_law_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/zovepokipopowuxawopajimit.pdf
    • https://cdn.shopify.com/s/files/1/0428/2223/8375/files/53618577442.pdf
    • https://cdn.shopify.com/s/files/1/0432/6319/7347/files/44173994601.pdf
    • https://cdn.shopify.com/s/files/1/0428/1240/7967/files/61940519116.pdf
    • https://cdn.shopify.com/s/files/1/0445/6103/9524/files/crush_it_gary_vaynerchuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/tomosu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/43748689561.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/
    • https://cdn.shopify.com/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006807.bin
93b9f8f63de869b0b5199a5d767dbbf71ac809f23751b30c6673c2fc5153bb78
pdf-font-stream PDF embedded font (sfnt) at offset 0x6807 5272 bytes
font_01_sfnt_off00007a0c.bin
8bf481b48502f4d05ee1ec7fdfa17188032c76a834c3f154ca9bbfb90a984cde
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0C 9744 bytes