Malicious PDF — malware analysis report

Static analysis result for SHA-256 dff250cfc05d8801…

MALICIOUS

PDF

33.4 KB Created: 2020-08-11 00:05:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e845f6df91bc601dadd1f4b9fdc816ad SHA-1: fb4f4120ee59e424dccfad612fee44f9aeab736d SHA-256: dff250cfc05d88016c1147cc52852817ec0ad73198371b2f2909ce3f8edf9a0a
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, with numerous links embedded within the document, many hosted on Shopify. The document body, though partially corrupted, contains text related to a 'Beretta 9000s manual pdf' and the malicious URL, suggesting a lure to a potentially harmful 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.com/pify?keyword=beretta+9000s+manual+pdf
    • http://files.ckfacials.com/uploads/1/3/1/4/131407194/7781634.pdf
    • http://files.tre-pta.com/uploads/1/3/0/7/130775108/6692476.pdf
    • http://xubolame.sweethartbaking.com/uploads/1/3/0/7/130739309/2355669.pdf
    • https://cdn.shopify.com/s/files/1/0438/2644/6498/files/gopubebeduzevekewovajosap.pdf
    • https://cdn.shopify.com/s/files/1/0433/9436/7649/files/sony_vegas_pro_free_trial.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4993/files/75294800427.pdf
    • https://cdn.shopify.com/s/files/1/0437/6032/0669/files/tajimudupulizasor.pdf
    • https://cdn.shopify.com/s/files/1/0437/7070/8125/files/surah_yasin_full_bangla.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/dadiwose.pdf
    • https://cdn.shopify.com/s/files/1/0429/8339/1395/files/37376254583.pdf
    • https://cdn.shopify.com/s/files/1/0438/3227/9190/files/anthropological_thought_by_makhan_jha_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/jowabafogidamewesen.pdf
    • https://cdn.shopify.com/s/files/1/0437/5507/7781/files/action_verbs_images.pdf
    • https://cdn.shopify.com/s/files/1/0429/6281/3084/files/24946705859.pdf
    • https://cdn.shopify.com/s/files/1/0431/4526/5312/files/zazidorivikuwed.pdf
    • https://cdn.shopify.com/s/files/1/0429/9623/6447/files/58146813433.pdf
    • https://cdn.shopify.com/s/files/1/0431/8140/8420/files/gegidoditakowadefejiza.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_off000046ae.bin
eaf3769184340a66034f7b27395920c27edcab0d055d5486389373427dd8f5a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x46AE 5536 bytes
font_01_sfnt_off0000595c.bin
2b62c7077b35a3ef50926827fb472d2db3c407704420d0d76b9621fbc4626462
pdf-font-stream PDF embedded font (sfnt) at offset 0x595C 9256 bytes