Malicious PDF — malware analysis report

Static analysis result for SHA-256 59da6c5d17552a27…

MALICIOUS

PDF

35.7 KB Created: 2020-08-31 11:17:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44c24d5e0f81ad299fa3adc47f504e5b SHA-1: 60d8582dfdc1a889c132b35c0ce5886c24def9db SHA-256: 59da6c5d17552a27bedf7a303bc0b526524a7a21371742592c8a25cfe0aa2550
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=serway+fizik+2+%25C3%25A7%25C3%25B6z%25C3%25BCmleri+pdf'. This URL is presented within the document body, disguised as academic material. The presence of numerous other links to Shopify-hosted PDFs suggests a link farm or SEO poisoning attempt to increase the visibility of the malicious redirector. No scripts were extracted, and the document body itself is heavily obfuscated, but the primary intent appears to be directing users to malicious infrastructure.

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.me/wix?keyword=serway+fizik+2+%25C3%25A7%25C3%25B6z%25C3%25BCmleri+pdf
    • https://cdn.shopify.com/s/files/1/0432/2308/9307/files/29924344956.pdf
    • https://cdn.shopify.com/s/files/1/0432/6054/3138/files/498172590.pdf
    • https://cdn.shopify.com/s/files/1/0439/1396/9819/files/unicode_character_symbols_emoticons.pdf
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/humble_and_kind_ukulele_chords.pdf
    • https://cdn.shopify.com/s/files/1/0434/1789/5070/files/sekavifumelomeniwugo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8999/3621/files/mupumuzawoji.pdf
    • https://cdn.shopify.com/s/files/1/0437/9269/5456/files/popivimifurapopajik.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1031/files/lunch_time_cypher.pdf
    • https://cdn.shopify.com/s/files/1/0437/8460/1752/files/65310697337.pdf
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/medonaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/flow_cytometry_basics.pdf
    • https://cdn.shopify.com/s/files/1/0429/8709/4177/files/anatomy_coloring_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/8597/8013/files/good_will_hunting_movie_free_hd.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8188/files/89204040140.pdf
    • https://cdn.shopify.com/s/files/1/0448/2465/8082/files/sejarah_peradaban_islam_bani_abbasiyah.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000491e.bin
c1ad1024dd12d9809c7053e2d98a906334c4d882a2b35907d378185fc14029aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x491E 5992 bytes
font_01_sfnt_off00005d14.bin
255e5624d05f438349786c7864f83898d700a0d3b8b4488b652116f3fb2ad887
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D14 11004 bytes