Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7d8bc72665d99f3…

MALICIOUS

PDF

58.0 KB Created: 2020-08-24 02:16:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdd4051769376a3a32aa80c0ddae43fe SHA-1: 86547882d996f78ac75bbd15a3b78494eb7c0fd2 SHA-256: b7d8bc72665d99f302daac339fd8aa8ea80dfdae2514d468b2c3db506f184e3b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to ttraff.com, which is used to lure users with movie-related keywords. The document body, though heavily obfuscated, contains the same URL and a reference to 'ardas kran movie full movie', reinforcing the lure. The PDF also contains a link farm heuristic, indicating a large number of external links, many hosted on cdn.shopify.com, likely to improve search engine ranking for the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=ardas+kran+movie+full+movie
    • http://tuzuw.healthyop.org/uploads/1/3/1/6/131606260/8552901.pdf
    • http://files.zionlutheranclark.com/uploads/1/3/1/4/131482886/kewuverogupegozuluj.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/vojajupodekuxuladubifag.pdf
    • https://cdn.shopify.com/s/files/1/0439/4162/6011/files/endocrine_therapy_breast_cancer.pdf
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/gadad.pdf
    • https://cdn.shopify.com/s/files/1/0431/8140/8420/files/fusupiw.pdf
    • https://cdn.shopify.com/s/files/1/0427/9874/3719/files/lagu_xpdc_cempedak_jadi_nangka.pdf
    • https://cdn.shopify.com/s/files/1/0431/3668/0098/files/measuring_up_reading_level_h_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0429/9148/5091/files/bagivaxegilexuvidukugaso.pdf
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/goxitojo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9607/1589/files/glenn_miller_in_the_mood_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0434/7422/3269/files/43668464621.pdf
    • https://cdn.shopify.com/s/files/1/0435/5037/6100/files/merojubuvajilukikegemef.pdf
    • https://cdn.shopify.com/s/files/1/0431/3759/7591/files/rolosenujosinimazunipubu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30408896218.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/

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065a4.bin
d070956a6d2b305d6150e82c4cf51db7de1ffd7eae75c853c193b086c5d9ac6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A4 5164 bytes
font_01_sfnt_off00007725.bin
aa890c11d31957efca0fd402aa72a454fd9b4193136962196ca6c8da92cd1596		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7725 20968 bytes
font_02_sfnt_off00009754.bin
04d00fe4d3d1cfb13f6c45ea00a1a16b92fe51d00c0709aca980b96f225372d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9754 2276 bytes
font_03_sfnt_off0000a120.bin
5a67d4f394b0e069a29b624fe35ce230a5ad98a9c418321ebe6e1d72a71fa868		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA120 5876 bytes
font_04_sfnt_off0000b615.bin
1a2da7baf5dc3f1d663d2f017d2f4635a4bbf84636aede7fc41275b5df663ca3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB615 10420 bytes

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