Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1b5f114c2d56a30…

MALICIOUS

PDF

44.2 KB Created: 2020-08-30 18:53:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ec5eac08036315f1ab0678744a0b50f SHA-1: f031cb0f6c011568e8aa488edf119490d10a7c2c SHA-256: b1b5f114c2d56a302ef51c216ec5de751a7d9fd18bd17c9fb2fe072ad646f34c
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify-hosted PDFs. One of these links, however, redirects to `ttraff.cc`, which is identified as known malicious infrastructure. This suggests a potential phishing or malware distribution attempt, leveraging SEO tactics to obscure the malicious intent. No scripts were extracted, limiting further analysis of direct payload delivery.

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/wix?keyword=brookstone+cloud+force+helicopter+troubleshooting
    • https://cdn.shopify.com/s/files/1/0430/8120/3861/files/sipud.pdf
    • https://cdn.shopify.com/s/files/1/0428/2862/8124/files/the_princeton_review_cracking_the_gre_2020_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27482348981.pdf
    • https://cdn.shopify.com/s/files/1/0429/2512/9891/files/brain_structure_and_their_functions.pdf
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/8617066641.pdf
    • https://cdn.shopify.com/s/files/1/0438/0917/7762/files/7510194740.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/ever_be_chords_g.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2268/files/83813487587.pdf
    • https://cdn.shopify.com/s/files/1/0438/0121/5138/files/achilles_tendon_repair_protocol.pdf
    • https://cdn.shopify.com/s/files/1/0432/3888/3495/files/50062274289.pdf
    • https://cdn.shopify.com/s/files/1/0428/6418/1404/files/99648436172.pdf
    • https://cdn.shopify.com/s/files/1/0438/0586/8193/files/and_i_ciara_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/2732/4310/files/86586816720.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4248/files/ielts_speaking_may_to_august_2020.pdf
    • https://cdn.shopify.com/s/files/1/0438/4518/9794/files/inter_1st_year_sanskrit_text_book_download.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_off00005fa7.bin
37d8c366ca2074168627c2c8e87f0e47443e4a394d2a7291069ae700045c8a54
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA7 5344 bytes
font_01_sfnt_off000071cb.bin
b3d8d951eb584b44b266a815ae4b56a124355169e7d92a649c0f3d071c1b99b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x71CB 10468 bytes
font_02_sfnt_off00009572.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9572 4324 bytes