Malicious PDF — malware analysis report

Static analysis result for SHA-256 b19d8450839f6ee4…

MALICIOUS

PDF

65.6 KB Created: 2020-08-04 18:11:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2a227e98538db45ced2e41920dee83c SHA-1: 7c4b99431e2a59b59f10eabedee929466be7d901 SHA-256: b19d8450839f6ee4baf630a0974c6281df1970df46768db9576442f8673b24ad
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.com/pify?keyword=cadence+allegro+user+manual+pdf, which is likely used to redirect the user to a phishing or malware download site. The document body, though heavily obfuscated, contains text related to 'Cadence allegro user manual pdf', suggesting a lure to trick users into clicking the malicious link.

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=cadence+allegro+user+manual+pdf
    • http://files.rootenergyadvisors.org/uploads/1/3/0/7/130776594/1525103.pdf
    • http://files.hansonhoneybee.com/uploads/1/3/1/4/131437750/a1bea32aa4.pdf
    • http://files.tightlinesflyfishing.com/uploads/1/3/1/0/131071037/6299ee2b3d88.pdf
    • http://lavazowek.zockolluniversity.com/uploads/1/3/0/7/130776449/kurotesewupewe.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7913/files/xiraxexafivulutulurapav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/noviwuvado.pdf
    • https://cdn.shopify.com/s/files/1/0428/9311/5558/files/gowezux.pdf
    • https://cdn.shopify.com/s/files/1/0430/7206/1591/files/71545595606.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3895/files/91515004783.pdf
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/wozipominojubaluwuzozazi.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4277/files/91025000271.pdf
    • https://cdn.shopify.com/s/files/1/0428/9495/0556/files/ramufedal.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/62267204868.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/segoridugonafugifit.pdf
    • https://cdn.shopify.com/s/files/1/0437/3594/1274/files/85256319788.pdf
    • https://cdn.shopify.com/s/files/1/0432/0002/0635/files/dixifoxisolefejipafe.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/
    • https://cdn.shopify.com/s/files/1/0428/9311/5558/file

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf50.bin
eab7ac55299ea0e0433eb74264cb0e3517554dd945f6510023caf176ceb9070a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF50 5380 bytes
font_01_sfnt_off0000d182.bin
04425cc37deb89d1c9a2afe3903a827b484e41212603c6aba40b6543a711b353		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD182 12068 bytes

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