Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b5fa77a18ca1240…

MALICIOUS

PDF

41.7 KB Created: 2020-08-10 12:23:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7296e9632578b3e93d35f95307e013ec SHA-1: 1f573372b9c2e1b12b1f752111ed535e89db5b07 SHA-256: 1b5fa77a18ca1240eb4745c85b8e2c07f1c5c17bb0990d1ec49f151401540c09
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to benign Shopify URLs, but one critical link redirects to a known malicious domain (ttraff.cc). The document body, though heavily obfuscated, contains text related to a book download and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a malicious redirector link is the primary indicator of malicious intent.

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=developmental+psychology+childhood+and+adolescence+9th+edition+pdf+download
    • http://files.shawngrewal.com/uploads/1/3/1/4/131453024/maputuv.pdf
    • http://files.makeupbynavpreet.com/uploads/1/3/2/7/132740399/5103825.pdf
    • http://files.mametcalfe.com/uploads/1/3/1/4/131411688/4c1a7dbfa8.pdf
    • https://cdn.shopify.com/s/files/1/0437/7998/1470/files/mr_coffee_cafe_barista_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/1938/5504/files/72143728411.pdf
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/pandas_select_row_by_index.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/circular_motion_experiment.pdf
    • https://cdn.shopify.com/s/files/1/0434/8208/7576/files/history_of_singapore_airlines.pdf
    • https://cdn.shopify.com/s/files/1/0437/0841/6168/files/migosudaterutivixixerox.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/fotisunevozexetul.pdf
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/chemistry_periodic_table_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/5131/1513/files/7562005061.pdf
    • https://cdn.shopify.com/s/files/1/0434/1818/9980/files/17931086831.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a18.bin
b69a989ba335e7bd072a9275fecf778ad654ca686beb356912a6f14736b0a761		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A18 5884 bytes
font_01_sfnt_off00005e1a.bin
989938616f8ab76184e1edfe943f68aebd305ec87c496a6f52ba4144bfc75cdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1A 10360 bytes
font_02_sfnt_off0000819e.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x819E 16204 bytes

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