Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba6fd365035b4dbe…

MALICIOUS

PDF

40.4 KB Created: 2020-08-24 19:09:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d626df1b0b0304e57484839bc972f82c SHA-1: 0edef268bb5a3987090320e2027bcb5f9bd5950c SHA-256: ba6fd365035b4dbe5046fa79d5d71a7b3f033960479a003c285df580492eb668
152 Risk Score

Malware Insights

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

The PDF contains a high density of external links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is presented in the document body as a 'meme generator apkhere' download. This indicates a social engineering lure to drive traffic to malicious infrastructure.

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=meme+generator+apkhere
    • http://files.carolynspearromance.com/uploads/1/3/0/9/130969436/b7c9451eca5.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/sadopafonakusorix.pdf
    • https://cdn.shopify.com/s/files/1/0437/7555/7793/files/catapult_king_game_for_pc_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/1144/8727/files/46695041424.pdf
    • https://cdn.shopify.com/s/files/1/0432/4756/7003/files/appsc_group_2_previous_papers_with_answers_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7988/3170/files/gupikoboxofa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7888/5280/files/56849890904.pdf
    • https://cdn.shopify.com/s/files/1/0433/5150/7112/files/albacea_peru.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4493/files/46569326953.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3109/files/31025497407.pdf
    • https://cdn.shopify.com/s/files/1/0436/2502/1603/files/kugokonapigo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/wonder_weeks_book_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/7161/8723/files/40132716110.pdf
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/lanatojumofopasuzed.pdf
    • https://cdn.shopify.com/s/files/1/0432/9160/7204/files/cisco_catalyst_2960x-_24ts-_l_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/1714/1415/files/billie_jean_fingerstyle_guitar_tab.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_off00006165.bin
856f5ca86ae156ce90f8e3eca85ba8b3c484bb09af43411741392314764ab9f9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6165 5092 bytes
font_01_sfnt_off00007292.bin
2fccd79625c17159141d644d64e81e659e26ecc6bddce3635de068d31b5f4dcf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7292 10052 bytes