Malicious PDF — malware analysis report

Static analysis result for SHA-256 515332568b45aab3…

MALICIOUS

PDF

42.1 KB Created: 2020-08-08 17:20:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c1423c3bf71bbd2cb6ecb07ec6cd60c SHA-1: 937845ba02578a293fa2cd9fd3ae22ffbaafb263 SHA-256: 515332568b45aab3ab1e623dd7808518c5e4a9b2049d609541376c2a1affb079
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a thesis PDF. The ML classifier strongly indicates maliciousness. The primary malicious IOC is the ttraff.cc redirector, which is likely used to funnel victims to a phishing or malware distribution site.

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.cc/pify?keyword=descriptive+research+design+thesis+pdf
    • http://files.fritzassociates.com/uploads/1/3/1/0/131070612/vugolusal_rigabudubibutus_besuvoju_sitasidaxopeg.pdf
    • http://files.hipababy.com.au/uploads/1/3/0/9/130969830/mowagubevoga.pdf
    • http://files.diamondpaintingconnection.com/uploads/1/3/0/7/130775429/tuwagazofe.pdf
    • http://files.asia-days.com/uploads/1/3/0/7/130776775/wirurak_polovuwakadiner_fabemopofo_bozoxu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1322/4094/files/50681539999.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6773/files/xilulikatixoretezogilo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tovunegorudakumuwi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6035/3429/files/cub_cadet_1045.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gowavofopinesifaremoka.pdf
    • https://cdn.shopify.com/s/files/1/0433/2643/9582/files/rorozotitufebebesosiputo.pdf
    • https://cdn.shopify.com/s/files/1/0444/2734/6086/files/amway_products_price_list_for_distributor.pdf
    • https://cdn.shopify.com/s/files/1/0437/6422/0055/files/tefusakijepevil.pdf
    • https://cdn.shopify.com/s/files/1/0436/3422/9401/files/34973846400.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32600433864.pdf
    • https://cdn.shopify.com/s/files/1/0431/1505/3213/files/ditawezefalujefuvadajagoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/2490/7414/files/69298569789.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rumifagekesodurelakalon.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_off00006597.bin
885931cf9f3a444dbdf68636af078629693295cbcf76726bc53dc62b0cf72bf7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6597 5444 bytes
font_01_sfnt_off00007829.bin
0b8e3018aba255d5eae86660ba66765d170331289256f7935a8d69b6dc183887
pdf-font-stream PDF embedded font (sfnt) at offset 0x7829 10348 bytes