Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecedf41124a70ec2…

MALICIOUS

PDF

47.6 KB Created: 2020-08-23 20:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28d47f79d26ab785e01902e1ba406ccc SHA-1: 7fba2244483cdc59a843fbff33da496c3b6e6cd1 SHA-256: ecedf41124a70ec252addee9cecb8b7f690e49b631a61f7b77974bd0dc43ce66
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, with numerous links pointing to Shopify domains, likely for SEO poisoning or to host further malicious content. The ML classifier strongly flagged this PDF as malicious. The embedded link in the document body, 'https://ttraff.com/pify?keyword=arabic+english+translation+quran+pdf', is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/pify?keyword=arabic+english+translation+quran+pdf
    • http://vobikor.thelabclan.com/uploads/1/3/1/4/131414661/lapedorupe.pdf
    • http://sirebibo.evildragonfiretheater.com/uploads/1/3/2/3/132303134/lonemamaj.pdf
    • http://files.briona.org/uploads/1/3/2/3/132302718/vaxapijumezi.pdf
    • https://cdn.shopify.com/s/files/1/0448/1892/3686/files/93296770358.pdf
    • https://cdn.shopify.com/s/files/1/0433/7824/5790/files/lasagne_verdi_sheets_tesco.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/52336572237.pdf
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/atrahasis_epic_full_text.pdf
    • https://cdn.shopify.com/s/files/1/0434/8284/1250/files/gimoneza.pdf
    • https://cdn.shopify.com/s/files/1/0436/8649/4361/files/91028587516.pdf
    • https://cdn.shopify.com/s/files/1/0447/4686/6839/files/entrepreneurship_development_programme_book.pdf
    • https://cdn.shopify.com/s/files/1/0436/2086/0064/files/58241906472.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3097/files/71455492421.pdf
    • https://cdn.shopify.com/s/files/1/0433/9446/5948/files/marshall_and_swift.pdf
    • https://cdn.shopify.com/s/files/1/0438/6711/1584/files/30983072721.pdf
    • https://cdn.shopify.com/s/files/1/0431/7881/9735/files/how_are_you_today_best_answer.pdf
    • https://cdn.shopify.com/s/files/1/0450/3266/9334/files/add_and_subtract_fractions_with_like_denominators_worksheets.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_off00005167.bin
7aedd43b158c5dfd7405a0ddb1c1738326a04e768ff6159562fa87e01775195c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5167 5672 bytes
font_01_sfnt_off00006494.bin
87d70254bf312aef4e38a17152f6129b3c0d7d5cec764a055b986b9293e2caea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6494 10032 bytes
font_02_sfnt_off00008640.bin
08893b4c897818475e9a753ddda69a0f65dd2d57d536aa5d0f5b48298773e5d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8640 22876 bytes

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