Malicious PDF — malware analysis report

Static analysis result for SHA-256 55eac45f5cb8e87c…

MALICIOUS

PDF

42.5 KB Created: 2020-08-18 22:45:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78d72d00f2931ce32d7b34accea886b7 SHA-1: 6d86621a04a18c10b6cf0fc38253743578728cf4 SHA-256: 55eac45f5cb8e87c4104c2504f0ece5cc68bbe56621f2cc2fbed0638f0667000
120 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.cc'. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same URL as the malicious redirector, suggesting the document's primary purpose is to trick users into visiting this malicious URL. The presence of a malicious redirector and a link farm indicates a phishing or social engineering attack.

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=definition+of+human+development+in+psychology+pdf
    • http://files.apwindowsuk.co.uk/uploads/1/3/1/4/131453695/xusoso.pdf
    • http://nemob.alcuincollege.com/uploads/1/3/1/8/131871864/f35a322b.pdf
    • https://cdn.shopify.com/s/files/1/0441/1087/2728/files/zitajefanemolupekunepomi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5665/9617/files/44609972763.pdf
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/kids_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/13855776531.pdf
    • https://cdn.shopify.com/s/files/1/0433/2827/4585/files/94959424814.pdf
    • https://cdn.shopify.com/s/files/1/0434/1891/0876/files/rokunemetijimuwu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3997/1738/files/advantages_and_disadvantages_of_alternative_fuels.pdf
    • https://cdn.shopify.com/s/files/1/0434/5643/0230/files/sekodopapedemanujelot.pdf
    • https://cdn.shopify.com/s/files/1/0430/8113/8343/files/adi_shankaracharya_video_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/3571/3958/files/8639938895.pdf
    • https://cdn.shopify.com/s/files/1/0429/4914/8828/files/romasuteradufumi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/fazug.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/93095159254.pdf
    • https://cdn.shopify.com/s/files/1/0429/5501/4297/files/american_gods_book_1.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rosetotirumeza.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_off000067a1.bin
25cb92d7fb3a5a44994815c5ce4de8096f5ffcda58a170676c12dd4f92a8062a
pdf-font-stream PDF embedded font (sfnt) at offset 0x67A1 5636 bytes
font_01_sfnt_off00007ab5.bin
94f4ea62465ea48851935dccd615f7f1862002783bfa7fa411ace821dd17e2a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB5 9900 bytes