Malicious PDF — malware analysis report

Static analysis result for SHA-256 0506e60f9d47f8a2…

MALICIOUS

PDF

39.8 KB Created: 2020-08-14 23:15:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b4c96ec13c984cd57d88578a7b51c97 SHA-1: e23374590d83a584e705b97192338891ceec8226 SHA-256: 0506e60f9d47f8a23b95156a68a3fa546a87072cce780872c9fa9c57e4fe4c8b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to potentially malicious redirector infrastructure or link farms. The primary malicious link identified is `https://ttraff.com/pify?keyword=odia+grammar+for+aso+exam+pdf`, which is flagged as a malicious redirector. The document's structure and the presence of numerous external links suggest an attempt to drive traffic to malicious sites, likely for phishing or malware distribution.

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=odia+grammar+for+aso+exam+pdf
    • http://kazipe.purrandpour.com/uploads/1/3/1/3/131398351/bosami.pdf
    • http://files.sunsolutionsolar.com/uploads/1/3/1/6/131637896/930774e95.pdf
    • http://files.appletreeschooloc.com/uploads/1/3/2/8/132815003/fea1a3df0ce45fe.pdf
    • http://files.angelcreations73.com/uploads/1/3/0/7/130775497/nojolu_bakoke_sokujoxuzes_xizunu.pdf
    • http://files.kbberakah.com/uploads/1/3/1/4/131453436/f844306d0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9302/4158/files/josas.pdf
    • https://cdn.shopify.com/s/files/1/0434/3421/3542/files/manejo_de_camelidos_sudamericanos.pdf
    • https://cdn.shopify.com/s/files/1/0429/8126/1466/files/dunoduza.pdf
    • https://cdn.shopify.com/s/files/1/0433/7061/0851/files/8511151048.pdf
    • https://cdn.shopify.com/s/files/1/0431/8406/2622/files/33014401653.pdf
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/49141025619.pdf
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/pabitutabifuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/gold_star_chili_menu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7155/3189/files/futezo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4605/0728/files/50125819667.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuwuvedalolavotidexetugom.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/pokagapetilokixaj.pdf
    • https://cdn.shopify.com/s/files/1/0436/1220/9315/files/pomarabefixaziwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/59019531296.pdf
    • https://www.facebook.com/odiapathashalaaso
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c91.bin
38677a7f0a9470961000cd774a360b0e00b0ea5e24b08148616d296a81755ada		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C91 5424 bytes
font_01_sfnt_off00006efd.bin
c0f6d9e575ad68944b717f43a1838df11ceca1139da6fbe20b27c0424075b9a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFD 10228 bytes

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