Malicious PDF — malware analysis report

Static analysis result for SHA-256 6972b7dac3e64ac8…

MALICIOUS

PDF

42.6 KB Created: 2020-07-23 00:41:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f18e135ff77904e7bacc2e3193325eac SHA-1: 15cc3e94a0b5307b2c1c67d2ee2a66d6f2c8b8a8 SHA-256: 6972b7dac3e64ac84956e3719fd05b805130ecf1d7a454c9966db92e4ec818b8
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a redirector link to 'ttraff.com'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious.

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/wb?keyword=pdf%20to%20word%20download%20app
    • http://files.jacksonpaintinginc.com/uploads/1/3/2/8/132816042/ce15f7b5e7dab72.pdf
    • http://files.apollongu.org/uploads/1/3/0/7/130739233/7094599.pdf
    • http://files.mindfuldoodles.com/uploads/1/3/0/7/130775922/fiputa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/sikatalezunabofefepid.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejukimuvili.pdf
    • https://cdn.shopify.com/s/files/1/0433/4937/7174/files/38328375215.pdf
    • https://xokiwija.files.wordpress.com/2020/07/25827127160.pdf
    • https://tinebusomozi983337029.files.wordpress.com/2020/07/97995840334.pdf
    • https://kavuwuri.files.wordpress.com/2020/06/tagunidovowuzimuvebutak.pdf
    • https://jipimutewiwo.files.wordpress.com/2020/07/83206565341.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rewosegukedisupagur.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3990/files/13619498064.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/72237651119.pdf
    • https://cdn.shopify.com/s/files/1/0431/1387/3569/files/66607304364.pdf
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/tasedarag.pdf
    • https://cdn.shopify.com/s/files/1/0432/0316/6372/files/50432120332.pdf
    • https://cdn.shopify.com/s/files/1/0427/4274/3207/files/kufakifobabine.pdf
    • https://cdn.shopify.com/s/files/1/0435/3366/4408/files/79603135902.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a50.bin
1101fb3ef29ff06a6d34d73336cd28d79860dece778ff8993659f19e55979840
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A50 4572 bytes
font_01_sfnt_off000079e8.bin
f7d794bce2425398053e11509504494fa22d8dd9c299af277230bd748ae94b67
pdf-font-stream PDF embedded font (sfnt) at offset 0x79E8 10388 bytes