Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f7e3afab70a7697…

MALICIOUS

PDF

49.4 KB Created: 2020-08-23 10:58:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9354f02cce51cbfc0ffd1eb602173dd0 SHA-1: 3dd039a112aaf66eee647f4dc92b6213a78b1940 SHA-256: 3f7e3afab70a7697fe8a7f2b57571636aca31145339e69852b0627ce6b214d84
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is the primary attack vector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=ansible+template+if+variable+true', indicating a lure to external content. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous URLs, many of which point to Shopify, likely to obscure the malicious redirector. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=ansible+template+if+variable+true
    • http://files.moonglowhardtop.com/uploads/1/3/0/7/130775934/2869169.pdf
    • http://serudoged.collaborativenursingnetworknepa.com/uploads/1/3/0/7/130776445/pozenimupadukef.pdf
    • http://files.thecookiieeejar.com/uploads/1/3/2/6/132682564/954117.pdf
    • https://cdn.shopify.com/s/files/1/0431/1220/2389/files/65856634780.pdf
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/26253587328.pdf
    • https://cdn.shopify.com/s/files/1/0427/8855/2870/files/93148546468.pdf
    • https://cdn.shopify.com/s/files/1/0435/3441/8075/files/jevizoma.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/34025142100.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/30313489959.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/international_financial_management_by_jeff_madura.pdf
    • https://cdn.shopify.com/s/files/1/0437/2971/5354/files/xupipus.pdf
    • https://cdn.shopify.com/s/files/1/0436/8000/6294/files/josumoxuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/5057/3724/files/adjectives_adverbs_test.pdf
    • https://cdn.shopify.com/s/files/1/0437/8004/6997/files/nekilosuxokivobab.pdf
    • https://cdn.shopify.com/s/files/1/0430/8592/2466/files/definisi_atresia_ani.pdf
    • https://cdn.shopify.com/s/files/1/0428/6083/9079/files/zoxuliwoxaburavakajok.pdf
    • http://jinja.pocoo.org/docs/2.10/templates/#defined
    • 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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b43.bin
1a3ba34c5255ab2157c8c0b0193e2288a5f6cb67adf7fc567c1e72bb48f2f6b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B43 5236 bytes
font_01_sfnt_off00008cf5.bin
b858bd9276afa3bcdc6a9e26e9dad7de890a149511437e8fe954d4c55fa93c0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF5 13712 bytes

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