Malicious PDF — malware analysis report

Static analysis result for SHA-256 8780f16e039aa000…

MALICIOUS

PDF

48.9 KB Created: 2020-08-20 01:59:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 703c93d905143125b6cff1975f009bad SHA-1: 2ebc63f52c77282b85e061cc8a5a776d4be61067 SHA-256: 8780f16e039aa00009b970e3e1336599cea52550b3f1a3b0a1131cd2a6eadfdf
154 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded URLs, particularly the one pointing to 'ttraff.cc', are indicative of a phishing or scam attempt designed to redirect users to potentially harmful content. While no scripts were explicitly extracted, the structure and heuristics strongly suggest an attempt to leverage external links for malicious purposes.

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.cc/pify?keyword=broiler+production+guide+philippines
    • http://pojor.nick5.100plus310plus10.com/uploads/1/3/2/6/132683459/2857243.pdf
    • http://files.aliseprice.com/uploads/1/3/1/3/131383743/tolenaveg-motisajot-koxipubemubiful-fopopo.pdf
    • http://files.intagtech.com/uploads/1/3/0/7/130776745/5532550.pdf
    • http://magevu.loveyouridlife.com/uploads/1/3/0/7/130775403/30553e655.pdf
    • http://files.centraltauntonscoutgroup.com/uploads/1/3/0/7/130775032/wejidagatefeku.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/5528/3366/files/22977242231.pdf
    • https://cdn.shopify.com/s/files/1/0432/1935/3757/files/pobuse.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2554/files/38650374951.pdf
    • https://cdn.shopify.com/s/files/1/0435/4244/6231/files/zobesabavalitilusu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/wow_classic_robes_of_arcana.pdf
    • https://cdn.shopify.com/s/files/1/0430/3945/7431/files/69701892605.pdf
    • https://cdn.shopify.com/s/files/1/0436/8682/2053/files/bafexaxipizuwabamumoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/9199/2480/files/84744496756.pdf
    • https://cdn.shopify.com/s/files/1/0432/4648/5672/files/45323730637.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7348/files/vinaloxowenutagafopozo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/sieve_analysis_test_for_aggregate.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_off00007e63.bin
d7c936b0d9c1d5023d2b92f38f2354d0d60886941b425cfac976c5fa6cccb25e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E63 5176 bytes
font_01_sfnt_off00008ff0.bin
402f242143c0c15e5721ec4417cd9a15ca3ba523c0d1f009f0892bf1b532be24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF0 11980 bytes

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