Malicious PDF — malware analysis report

Static analysis result for SHA-256 9952bb6af4a335b5…

MALICIOUS

PDF

41.0 KB Created: 2020-09-16 19:08:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a034c7624c92b2ce0457eeebaef1eb6 SHA-1: ccb24b6538c2e7796e79f8056e4a28f6e8919109 SHA-256: 9952bb6af4a335b519105494438db79220211809f33e4921a65ede8893979d73
152 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, likely as part of a phishing or scam campaign. The document body and embedded links suggest a lure related to downloading software, specifically 'wwe 2k apk download apkpure'. The PDF is flagged by multiple critical heuristics, including a malicious redirector link and a link farm, indicating a high likelihood of malicious intent. No scripts were extracted from this sample.

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.club/wix?keyword=wwe+2k+apk+download+apkpure
    • http://wirube.aislinfields.com/uploads/1/3/1/8/131857631/jagamomijusan.pdf
    • http://files.juliacernydmd.com/uploads/1/3/0/9/130969446/f4b454b94fc.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/dl_youtube_audio.pdf
    • https://cdn.shopify.com/s/files/1/0482/5710/6074/files/92902340564.pdf
    • https://cdn.shopify.com/s/files/1/0459/9401/6925/files/jevepufo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5515/3303/files/18101749862.pdf
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/dukajiponixezawoxafazow.pdf
    • https://20333579-80fe-42b1-9df6-9700c39ab6df.filesusr.com/ugd/3eb4bd_524614f6b0c4478c925eef17b05aa24e.pdf?index=true
    • https://6966cc20-e605-4c23-8f06-78ed1bd5af71.filesusr.com/ugd/7be1cd_5266a077832645a0a862ac9619afe699.pdf?index=true
    • https://3e5c2753-cdf4-42aa-b8fe-ed511eebd6db.filesusr.com/ugd/370021_b4174ad8deb0415c84619d1d5a4520ee.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0433/3499/2025/files/63156057578.pdf
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/do_a_barrel_roll_2.pdf
    • https://cdn.shopify.com/s/files/1/0459/6813/0215/files/10706445949.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/medea_euripides_deutsch.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_off000062c1.bin
cf6e37340d2a914b2702ca47defc88c3ebc15f1d15b0eb2dc03eb13170fa1e3d
pdf-font-stream PDF embedded font (sfnt) at offset 0x62C1 5076 bytes
font_01_sfnt_off00007434.bin
db3a46d907622214d4dac1dca8dc739f77716eeb115b187f0033178d45be8849
pdf-font-stream PDF embedded font (sfnt) at offset 0x7434 10280 bytes