Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab0d54110ef2f2ad…

MALICIOUS

PDF

57.4 KB Created: 2020-07-10 19:27:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1b5e916b7385ed65142447f1d92a0ce SHA-1: a2cefa894e9d73573a72fc107d0be78b5fe41056 SHA-256: ab0d54110ef2f2ad0ed0441d75973a4c5ddf4c8359dcaa8d2fcad127b6379fa2
152 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier and contains a large number of embedded links. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically `https://ttraff.com/wb?keyword=howard%20miller%20grandfather%20clock%20610-569%20manual`. The document body also contains numerous other PDF links, suggesting a link farm or SEO poisoning attempt to drive traffic to potentially malicious sites.

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/wb?keyword=howard%20miller%20grandfather%20clock%20610-569%20manual
    • http://files.saugatuckyachtclub.com/uploads/1/3/2/6/132696104/7159300.pdf
    • http://files.lmnaturalhealth.com/uploads/1/3/1/1/131163854/b4fed9818065b34.pdf
    • http://files.comfycozycleaningservice.com/uploads/1/3/0/7/130776781/7838692.pdf
    • http://files.imarsonline.com/uploads/1/3/1/3/131380413/6c76ebc2.pdf
    • http://files.rhfd53.com/uploads/1/3/0/7/130739243/7d45feec9a3616.pdf
    • http://files.romehomelb.com/uploads/1/3/1/4/131438299/2962037.pdf
    • http://files.customerfocusedlearning.com/uploads/1/3/0/7/130738814/bavajesapamukogobos.pdf
    • http://files.millbrookrotarydirectory.com/uploads/1/3/0/7/130775846/d99ea.pdf
    • https://rikowowirami.files.wordpress.com/2020/06/48465647717.pdf
    • https://todasaxabul.files.wordpress.com/2020/07/vaxosimug.pdf
    • https://tuxodoxeze.files.wordpress.com/2020/07/zugisegu.pdf
    • https://garitusupodi.files.wordpress.com/2020/06/wiruzis.pdf
    • https://kajusig.files.wordpress.com/2020/07/3619784434.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tepumesuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/ziludup.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/nuxurinaje.pdf
    • https://cdn.shopify.com/s/files/1/0430/8582/4164/files/69924800537.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jatebilebasa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39858795743.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/wojesubujosolukirewebexup.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_off0000a027.bin
0600cc295ad4e1919c69c285045981bc52023156ebb621f38f66fd8048107928		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA027 5916 bytes
font_01_sfnt_off0000b437.bin
ef7d60712d972038a0eca084292508f4bc272010940258163a3d57072ba11db8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB437 10512 bytes

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