Malicious PDF — malware analysis report

Static analysis result for SHA-256 e22217da47e0eb5f…

MALICIOUS

PDF

44.7 KB Created: 2020-08-06 23:08:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c56a9a5eb76a559ca0c58e95d16c6f15 SHA-1: 775bed8387f07676dad52c5ed0f96266647d537c SHA-256: e22217da47e0eb5ff623cebff887f6392bc1de95c96dbf06d2fc7a25eb2a392f
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to download a PDF. The presence of a link farm and the ML classifier's high confidence further support malicious intent. The primary attack vector appears to be a phishing lure using a link to a redirector.

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=big+bang+theory+physics+pdf
    • http://files.csdigitalsolutionsgroup.com/uploads/1/3/1/4/131483275/b3399bd3e2df.pdf
    • http://files.buttevistaparentclub.org/uploads/1/3/1/4/131437005/suzutepagami.pdf
    • http://files.lucidcoaching.com/uploads/1/3/1/3/131380773/vetewe_ketemawemidi_pewilebexer.pdf
    • http://files.cierrasedgeamstaffs.com/uploads/1/3/1/6/131606697/xokegiwepebupokuzig.pdf
    • https://cdn.shopify.com/s/files/1/0428/2194/3463/files/vofez.pdf
    • https://cdn.shopify.com/s/files/1/0438/3683/3954/files/95479629443.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/nenulibeziji.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1520/files/56644439217.pdf
    • https://cdn.shopify.com/s/files/1/0430/0763/9711/files/saganog.pdf
    • https://cdn.shopify.com/s/files/1/0433/4436/3678/files/45982472154.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/zopibad.pdf
    • https://cdn.shopify.com/s/files/1/0429/8211/3433/files/xuxokakuxam.pdf
    • https://cdn.shopify.com/s/files/1/0435/9480/9507/files/kuwiruwumuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40545468116.pdf
    • https://cdn.shopify.com/s/files/1/0431/3684/3933/files/tedixafagebuvotez.pdf
    • https://cdn.shopify.com/s/files/1/0429/2768/5799/files/fowunozumolenamotezew.pdf
    • https://cdn.shopify.com/s/files/1/0432/4553/5400/files/25735025823.pdf
    • https://cdn.shopify.com/s/files/1/0431/3445/1874/files/datewilazosixeta.pdf
    • https://cdn.shopify.com/s/files/1/0434/6334/4294/files/online_editor_free_download.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_off000067d9.bin
aaf2b7293dff874f63dc87eee481f2b3890ba3cf71d28616970c720451b8a595		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D9 5676 bytes
font_01_sfnt_off00007b2e.bin
3a907b4d8a8976a709f079e4cdc7d119ac071852c3ef9e33e18387b3af536a3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2E 13440 bytes

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