Malicious PDF — malware analysis report

Static analysis result for SHA-256 eed4edd9c554e584…

MALICIOUS

PDF

42.6 KB Created: 2020-08-10 03:26:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 09496850d93677643321018143714077 SHA-1: a211dc61e00f8c225fb5c9a8780787511192a182 SHA-256: eed4edd9c554e58431a434bdffbe9a943e9cfcf715aa98b4f2f82e99217d0da5
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one heuristic specifically identifying a link to known malicious redirector infrastructure. The document body, though partially corrupted, suggests a lure related to 'Altium designer training manual pdf'. The presence of a link farm and a high ML classifier score further support malicious intent. The primary attack vector appears to be directing users to malicious sites via embedded links.

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=altium+designer+training+manual+pdf
    • http://pisefa.suesessentiallife.com/uploads/1/3/1/4/131438641/4545066.pdf
    • http://files.littlepaperslipper.com/uploads/1/3/2/7/132740494/visutumi.pdf
    • http://files.fadreen.com/uploads/1/3/2/7/132740586/zuriwod-rugodo-dewafidumepinok.pdf
    • http://files.vapeheisen.com/uploads/1/3/2/7/132710795/4899234.pdf
    • https://cdn.shopify.com/s/files/1/0436/3635/9326/files/nozezopetemuvawibojedot.pdf
    • https://cdn.shopify.com/s/files/1/0436/1145/5645/files/67875338809.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96672573922.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9219/files/35449145295.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/us_ntp_servers.pdf
    • https://cdn.shopify.com/s/files/1/0429/2490/0515/files/41439459144.pdf
    • https://cdn.shopify.com/s/files/1/0436/0273/9363/files/20730021893.pdf
    • https://cdn.shopify.com/s/files/1/0433/7473/9607/files/23046393616.pdf
    • https://cdn.shopify.com/s/files/1/0435/7403/4600/files/gubefurasa.pdf
    • https://cdn.shopify.com/s/files/1/0432/3701/5719/files/9543083454.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/medade.pdf
    • https://cdn.shopify.com/s/files/1/0431/6767/8618/files/98881482373.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lavijado.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/tonuwowi.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_off0000680f.bin
0968a83a63b064ae98ae6ea6a6b6f61130eb8775e8827714da8f20cfc1aa7350		 pdf-font-stream PDF embedded font (sfnt) at offset 0x680F 5348 bytes
font_01_sfnt_off00007a29.bin
a76f29700160814a1221cef52d5375c9a50e3133a5ed3fe8c1842461fc597586		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A29 10316 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.