Malicious PDF — malware analysis report

Static analysis result for SHA-256 e48bd4c64c422be9…

MALICIOUS

PDF

52.7 KB Created: 2020-08-22 16:51:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 442ecfcd4438dab633e9ee1ad5225042 SHA-1: cde44e0167468db70205316628f964dabe2acbad SHA-256: e48bd4c64c422be9962eaa80a1fdb538c77ce09eedcd72b8696bb9ef724f4b83
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, disguised as calligraphy practice sheets, redirects through a known malicious redirector (ttraff.cc). This suggests a phishing or scam attempt designed to lead users to malicious content.

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=fountain+pen+calligraphy+practice+sheets
    • http://galeza.powerofmath.net/uploads/1/3/1/3/131379478/2050617.pdf
    • https://cdn.shopify.com/s/files/1/0432/7283/1134/files/pafadotufoxirisik.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/javascript_games_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/30305990120.pdf
    • https://cdn.shopify.com/s/files/1/0438/4676/2656/files/86874497256.pdf
    • https://cdn.shopify.com/s/files/1/0433/5229/3541/files/73772765361.pdf
    • https://cdn.shopify.com/s/files/1/0431/5335/8999/files/mathematics_10_teacher_s_guide_unit_1.pdf
    • https://cdn.shopify.com/s/files/1/0432/7145/4883/files/8th_grade_go_math_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/celiac_disease_nutrition_therapy.pdf
    • https://cdn.shopify.com/s/files/1/0434/8660/9573/files/pimojipowux.pdf
    • https://cdn.shopify.com/s/files/1/0437/1739/4586/files/19434920203.pdf
    • https://cdn.shopify.com/s/files/1/0434/7609/1032/files/27118312482.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007028.bin
c8695066c9847ba220113a7d9131117326932ba275c6993264fa23ca5a1d9bbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7028 5252 bytes
font_01_sfnt_off00008200.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8200 1800 bytes
font_02_sfnt_off00008a8e.bin
858ed4d7c8335533c18e22b9977cdb0b78201f2922ce88f2c19cf9795ef10b57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8E 10504 bytes
font_03_sfnt_off0000aebe.bin
d2160f42e09c196f09356f838713ec8fd2c36a84c42d044d8a74d733a435e07a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEBE 16408 bytes

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